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North American pharmacy fraternity
Rho Pi Phi International Pharmaceutical Fraternity (ΡΠΦ) is a co-ed collegiate professional fraternity dedicated to the profession of pharmacy. In November
Rho_Pi_Phi
of Gamma Pi Lambda - Gamma Pi Lambda Chapter of Alpha Phi Alpha". Gamma Pi Lambda. Retrieved April 17, 2023. "Gamma Rho Lambda | Alpha Phi Alpha". garyalphas
List of Alpha Phi Alpha chapters
List_of_Alpha_Phi_Alpha_chapters
"Chapter History". Phi Pi Zeta Chapter Zeta Phi Beta. Retrieved March 8, 2023. "About ΩΠΖ". omegapizeta. Retrieved March 3, 2023. "Mu Rho Zeta History". www
List of Zeta Phi Beta chapters
List_of_Zeta_Phi_Beta_chapters
Sigma Pi Phi is an African American professional fraternity. Founded in Philadelphia, Pennsylvania, in 1904, it is the oldest Greek lettered fraternity
List_of_Sigma_Pi_Phi_chapters
American collegiate fraternity (1915–1939)
Phi Pi Phi (ΦΠΦ) was a social fraternity founded at Northwestern University in 1915. It merged with Alpha Sigma Phi in 1939. Phi Pi Phi was founded on
Phi_Pi_Phi
International collegiate fraternity
three national fraternities merged with Pi Lambda Phi: Phi Beta Delta, Beta Sigma Tau and Beta Sigma Rho. Phi Beta Delta was founded at Columbia University
Pi_Lambda_Phi
it reformed from Phi Sigma Tau, established in 1942. Chapter formed from Pi Rho Sigma (loca), established in 1924. After going dormant, it reformed as a
List of Delta Phi Epsilon (social) chapters
List_of_Delta_Phi_Epsilon_(social)_chapters
from Sigma Beta Pi, established in 2011. Chapter formed from Upsilon Omicron Rho, established in 2011. Chapter formed from Alpha Omega Phi, established in
List of Delta Sigma Pi chapters
List_of_Delta_Sigma_Pi_chapters
Retrieved August 6, 2026. "Pi Gamma Sigma Alumni Chapter". pgsigma.org. Retrieved August 6, 2026. "Phi Beta Sigma Fraternity, Rho Gamma Sigma Chapter". RocklandSigmas1914
List of Phi Beta Sigma chapters
List_of_Phi_Beta_Sigma_chapters
established in 1947. Chapter formed from Alpha Phi, established in 1903. Chapter reformed in 1925 from Phi Alpha Pi (local), established in 1923. Chapter formed
List of Pi Kappa Alpha chapters
List_of_Pi_Kappa_Alpha_chapters
Notation in general relativity
{\begin{aligned}D\phi _{1}-{\bar {\delta }}\phi _{0}&=(\pi -2\alpha )\phi _{0}+2\rho \phi _{1}-\kappa \phi _{2}\,,\\[1ex]D\phi _{2}-{\bar {\delta }}\phi _{1}&=-\lambda
Newman–Penrose_formalism
Gamma Rho Sorority, Inc. Zeta Pi Sigma Alumnae Chapter". Zeta Pi Sigma. Retrieved May 10, 2023. "About | Sigma Gamma Rho Sorority, INC- Zeta Phi Sigma
List of Sigma Gamma Rho chapters
List_of_Sigma_Gamma_Rho_chapters
formed from Phi Kappa Rho (local), established in 1921. Chapter formed from Alpha Delta Epsilon, established in 1938. Chapter formed from Pi Epsilon, established
List of Alpha Epsilon Pi chapters
List_of_Alpha_Epsilon_Pi_chapters
1924 by absorbing Gamma Phi, established in 1920. Chapter closed due to the American Civil War. Reformed in 1996 by absorbing Rho Sigma Tau (local), established
List_of_Chi_Phi_chapters
Seventeenth letter of the Greek alphabet
of a given policy ( π {\displaystyle \pi } ) in reinforcement learning, denoted ρ π {\displaystyle \rho ^{\pi }} The rename operation in relational algebra
Rho
American medical fraternity
Phi Rho Sigma Society (ΦΡΣ) is a co-educational medical fraternity founded by medical students at Northwestern University in 1890. Phi Rho Sigma Medical
Phi_Rho_Sigma
Pi Lambda Phi is international social fraternity. It was founded on March 21, 1895, at Yale University in New Haven, Connecticut. It merged with Phi Beta
List of Pi Lambda Phi chapters
List_of_Pi_Lambda_Phi_chapters
in 1845. It absorbed 4 chapters of Phi Phi Phi in 1939, followed by 28 active chapters of Alpha Kappa Pi on September 6, 1946. In 1965, it absorbed Alpha
List of Alpha Sigma Phi chapters
List_of_Alpha_Sigma_Phi_chapters
Chapter formed from Phi Delta Pi, established in 1931. Chapter formed from Beta Pi Sigma, established in 1930. Chapter formed from Chi Rho Delta, established
List of Phi Sigma Sigma chapters
List_of_Phi_Sigma_Sigma_chapters
1925. Formed from Rho Pi Mu (local), established in 1925. Formed from Omicron Eta (local), established in 1927. Formed from Chi Lambda Phi, established in
List of Theta Phi Alpha chapters
List_of_Theta_Phi_Alpha_chapters
absorbed Sigma Pi Epsilon. Chapter formed from Gamma Delta Rho. Chapter formed from Tau Gamma Psi, established in 1922. Chapter formed from Phi Kappa Theta
List of Phi Kappa Tau chapters
List_of_Phi_Kappa_Tau_chapters
formed from Beta Pi Gamma, established in 1956. Chapter formed from Pi Delta Pi, established in 1961. Chapter formed from Kappa Rho, established in 1929
List of Alpha Omicron Pi chapters
List_of_Alpha_Omicron_Pi_chapters
1917 when the last members of the four sororities on campus, Alpha Delta Pi, Phi Mu, Zeta Tau Alpha and Delta Delta Delta, graduated. Since then, Greeks
List of Alpha Delta Pi chapters
List_of_Alpha_Delta_Pi_chapters
Field-equations in general relativity
{\displaystyle \nabla ^{2}\Phi \left({\vec {x}},t\right)=4\pi G\rho \left({\vec {x}},t\right)} where ρ {\displaystyle \rho } is the mass density. The
Einstein_field_equations
Alpha Phi. Retrieved September 13, 2023. "Omicron". Alpha Phi. Retrieved September 13, 2023. "Pi". Alpha Phi. Retrieved September 13, 2023. "Rho". Alpha
List_of_Alpha_Phi_chapters
Consolidated with Psi Rho chapter. Chapter formed from the merger of Beta, Delta, and Theta of Pi Chi Eastern and Phi Chi and Pi Sigma of Phi Chi Southern. Chapter
List_of_Phi_Chi_chapters
American Jewish fraternity (1910–1972)
Sigma Rho (ΒΣΡ) was an American social fraternity founded at Cornell University in 1910. Most of its active chapters were absorbed into Pi Lambda Phi fraternity
Beta_Sigma_Rho
Asian-American-interest collegiate fraternity (1929–2023)
Pi Alpha Phi Fraternity, Inc. (ΠΑΦ, also Pi Alpha Phi or PAPhi) was an American university-level fraternity. It was founded in 1929 at the University
Pi_Alpha_Phi
American association of national, collegiate, professional fraternities and sororities
Upsilon Phi, Phi Beta Pi, Phi Rho Sigma, Theta Kappa Psi Pharmacy: Kappa Psi, Phi Delta Chi Military: Scabbard and Blade Science: Chi Beta Phi The PFA
Professional Fraternity Association
Professional_Fraternity_Association
active at MIT. Chapter absorbed Phi Sigma Delta. Chapter formed from Phi Pi, established in 1923. Chapter formed from Sigma Pi Alpha, established in 1920.
List of Tau Epsilon Phi chapters
List_of_Tau_Epsilon_Phi_chapters
Canadian collegiate fraternity
Phi Kappa Pi (ΦΚΠ) is a Canadian national fraternity. Founded on March 22, 1913, as Canada's only national fraternity, Phi Kappa Pi has active chapters
Phi_Kappa_Pi
a list of Phi Sigma Kappa chapters. Active chapters are indicated in bold. Inactive chapters are in italics. Alpha chapter called itself "Pi" from 1878
List of Phi Sigma Kappa chapters
List_of_Phi_Sigma_Kappa_chapters
The Pi Kappa Phi fraternity has founded a total of 232 chapters in 41 U.S. states and the District of Columbia. As of May 3, 2013, there are 178 active
List_of_Pi_Kappa_Phi_chapters
Rho Iota chapter in 1977. The chapter initiated their first undergraduate brother at Monmouth University on March 22, 1997. On January 21, 2018, Phi Upsilon
List of Omega Psi Phi chapters
List_of_Omega_Psi_Phi_chapters
Fellowship groups for a specific field
enrolled in particular majors or areas of study, including Phi Mu Alpha Sinfonia, Phi Sigma Rho, and Triangle. Nevertheless, these groups are social, rather
Professional fraternities and sororities
Professional_fraternities_and_sororities
Rho. Merged with Pi Lambda Phi in 1920. Merged with Pi Tau Pi. Merged with Phi Epsilon Pi in 1961. Merged with Tau Delta Phi in 1934. Merged with Phi
List of Jewish fraternities and sororities
List_of_Jewish_fraternities_and_sororities
lost in 1917 when the last members of its four sororities, Alpha Delta Pi, Phi Mu, Zeta Tau Alpha and Delta Delta Delta graduated. All seven sororities
List_of_Phi_Mu_chapters
Elliptic partial differential equation
{g} =-\nabla \phi .} Substituting this into Gauss's law, ∇ ⋅ ( − ∇ ϕ ) = − 4 π G ρ , {\displaystyle \nabla \cdot (-\nabla \phi )=-4\pi G\rho ,} yields Poisson's
Poisson's_equation
a colony in 2019. Chapter formed from Omega Pi Alpha, established in 1905. Chapter formed from Kappa Phi, established in 1912. The chapter closed when
List of Delta Sigma Phi chapters
List_of_Delta_Sigma_Phi_chapters
American Jewish collegiate sorority
University (Rho) Rowan University (Phi Kappa) State University of New York at New Paltz (Phi Phi) State University of New York at Oswego (Phi Nu) State
Alpha_Epsilon_Phi
Topics referred to by the same term
heart medicine Registered Professional Planner, a Canadian qualification Rho Pi Phi, a professional pharmacy fraternity Bus Route Planning Programme RESTful
RPP
"Gender Inclusion: Resolution" (PDF). Phi Sigma Pi. August 2014. Retrieved February 5, 2023. "History | Phi Sigma Pi National Honor Fraternity". phisigmapi
List of LGBTQ and LGBTQ-friendly fraternities and sororities
List_of_LGBTQ_and_LGBTQ-friendly_fraternities_and_sororities
Conic conformal map projection
_{1}\right)\right]}}\\\rho &=RF\cot ^{n}\left({\tfrac {1}{4}}\pi +{\tfrac {1}{2}}\phi \right)\\\rho _{0}&=RF\cot ^{n}\left({\tfrac {1}{4}}\pi +{\tfrac {1}{2}}\phi _{0}\right)\\F&={\frac
Lambert conformal conic projection
Lambert_conformal_conic_projection
from Omicron Kappa Omicron which was established in 1921. Formed from Phi Delta Rho which was established in 1947. Formed from Sigma Chi Alpha which was
List of Alpha Chi Rho chapters
List_of_Alpha_Chi_Rho_chapters
National service fraternity (founded in the US, 1925)
000th member was initiated in the Rho Pi chapter of Alpha Phi Omega at the University of California, San Diego. Alpha Phi Omega is organized to provide community
Alpha_Phi_Omega
Christian college in Grove City, Pennsylvania, US
Grove City College (GCC) is a private, conservative Christian liberal arts college in Grove City, Pennsylvania, United States. It was founded in 1876 as
Grove_City_College
chapter originated as Phi Beta (local) in 1907. This chapter originated as Phi Beta (local) in 1913. This chapter originated as Sigma Rho (local) in 1914.
List of Gamma Phi Beta chapters
List_of_Gamma_Phi_Beta_chapters
Alpha Zeta Phi (local), established in 1900. Chapter formed from Omega Pi Alpha (local), established in 1903. Chapter formed from Delta Kappa Phi, established
List of Sigma Phi Epsilon chapters
List_of_Sigma_Phi_Epsilon_chapters
African American college fraternity
Sigma Phi Rho Fraternity, Inc. (ΣΦΡ) is an African American collegiate fraternity. It was established at Wagner College in Staten Island, New York in
Sigma_Phi_Rho
Intersection of a sphere and cone emanating from its center
_{0}^{2\pi }\int _{0}^{\varphi }\int _{0}^{r}\rho ^{2}\sin \phi \,d\rho \,d\phi \,d\theta =\int _{0}^{2\pi }d\theta \int _{0}^{\varphi }\sin \phi \,d\phi \int
Spherical_sector
Mathematical gradient operator in certain coordinate systems
{A_{\rho }(\phi )\,d\rho -A_{\rho }(\phi +d\phi )\,d\rho +A_{\phi }(\rho +d\rho )(\rho +d\rho )\,d\phi -A_{\phi }(\rho )\rho \,d\phi }{\rho \,d\rho \,d\phi
Del in cylindrical and spherical coordinates
Del_in_cylindrical_and_spherical_coordinates
Mathematical model of a wormhole
{\displaystyle f(\rho )=-{\sqrt {1-e^{-(2\,m/n)\phi }}}} and r ( ρ ) = ( ρ − m ) 2 + a 2 {\displaystyle r(\rho )=\textstyle {\sqrt {(\rho -m)^{2}+a^{2}}}}
Ellis_drainhole
Equation explaining structure of a spherical body of isotropic material
{\displaystyle {\frac {dP}{dr}}=-{\frac {Gm}{r^{2}}}\rho \left(1+{\frac {P}{\rho c^{2}}}\right)\left(1+{\frac {4\pi r^{3}P}{mc^{2}}}\right)\left(1-{\frac
Tolman–Oppenheimer–Volkoff equation
Tolman–Oppenheimer–Volkoff_equation
Number, approximately 3.14
the same notation, while Gregory instead used π ρ {\textstyle {\frac {\pi }{\rho }}} to represent 6.28... . The earliest known use of the Greek letter
Pi
in 1909. Formed from Phi Kappa Pi, established in 1913. Reformed in 1916 from Phi Zeta Phi, established in 1904. Formed from Rho Sigma Zeta, established
List of Phi Gamma Delta chapters
List_of_Phi_Gamma_Delta_chapters
of the rechartered Rho Upsilon chapter occurred on December 2, 2000. Records accessed 6 September 2015. Underwood 2005, A.28. "Phi Mu Alpha Reactivated
List of Phi Mu Alpha Sinfonia chapters
List_of_Phi_Mu_Alpha_Sinfonia_chapters
Expression for two-point correlation functions
{\displaystyle \langle 0|\Phi (x)\Phi ^{\dagger }(y)|0\rangle =\int {\frac {d^{4}p}{(2\pi )^{3}}}\int _{0}^{\infty }d\mu ^{2}e^{-ip\cdot (x-y)}\rho (\mu ^{2})\theta
Källén–Lehmann spectral representation
Källén–Lehmann_spectral_representation
Defunct American collegiate fraternity
chapter of Pi Kappa Phi. The Tri-State chapter eventually joined Sigma Phi Epsilon. The others "gradually disappeared." Sigma Delta Rho's badge was a
Sigma_Delta_Rho
Sixteenth letter of the Latin alphabet
letter Pi, but it looks like the Greek letter Rho. 𐤐 : Semitic letter Pe, from which the following symbols originally derive: Π π : Greek letter Pi 𐌐 :
P
Twenty-first letter in the Greek alphabet
Phi (/ˈfaɪ, ˈfiː/ FY, FEE; uppercase Φ, lowercase φ or ϕ; Ancient Greek: ϕεῖ pheî [pʰéî̯]; Modern Greek: φι fi [fi]) is the twenty-first letter of the
Phi
Samach to Beta Sigma Rho in 1920 and again at the merger with Pi Lambda Phi in 1972. After the merger into the Pi Lam chapter in 1972, Pi Lam closed in 1976
List of Cornell University fraternities and sororities
List_of_Cornell_University_fraternities_and_sororities
"About Us". Psi Rho Phi Military Fraternity Inc. Archived from the original on February 1, 2023. Retrieved June 9, 2026. "Pi Delta Phi Veterans Fraternity"
List of African-American fraternities and sororities
List_of_African-American_fraternities_and_sororities
Organization that regulates collegiate honor societies
organizations: Alpha Omega Alpha, the Order of the Coif, Phi Beta Kappa, Phi Kappa Phi, Sigma Xi, and Tau Beta Pi. The Association of College Honor Societies (ACHS)
Association of College Honor Societies
Association_of_College_Honor_Societies
chapter reformed from the Kappa Delta Rho Society (local), established in 1990. Chapter formed from Phi Alpha Pi (local), established in 1909. After going
List of Kappa Delta Rho chapters
List_of_Kappa_Delta_Rho_chapters
North American medical fraternity (1901–1918)
Pi chapter merged into the Beta Rho (first) chapter of Kappa Psi following a national merger of the two fraternities. List of Kappa Psi chapters Phi Rho
Phi_Delta_(medical)
Coefficients in a series expansion of a potential
}{=}}\ \int d\mathbf {r} '\rho (\mathbf {r} ')\left(r'\right)^{\ell }{\sqrt {\frac {4\pi }{2\ell +1}}}Y_{\ell m}^{*}(\theta ',\phi ').} The potential Φ(r)
Spherical_multipole_moments
founded in 1956 as the Phi Nu chapter of Alpha Chi Rho, a national fraternal organization. A previous Phi Nu chapter of Alpha Chi Rho at Dartmouth had merged
Dartmouth College fraternities and sororities
Dartmouth_College_fraternities_and_sororities
Defunct American collegiate social fraternity
chapter of Sigma Delta Rho it accepted the members of another F&M local called Alpha Pi. Became the Beta Pi chapter of Alpha Sigma Phi with the national merger
Alpha_Kappa_Pi
Function representing the number of primes less than or equal to a given number
{\displaystyle \pi _{0}(x)\approx \operatorname {R} (x)-\sum _{\rho }\operatorname {R} \left(x^{\rho }\right)-{\frac {1}{\log x}}+{\frac {1}{\pi }}\arctan {\frac
Prime-counting_function
African-American professional education sorority
"NSPDK, Inc. Pi Chapter". www.nspdkpichapter.org. Retrieved 2024-02-10. "Rho Chapter History". National Sorority of Phi Delta Kappa, Inc. Rho Chapter. Retrieved
Phi_Delta_Kappa_(sorority)
established in 1903. Chapter formed from Sigma Pi, established in 1903. Chapter formed from Kappa Rho, established in 1904. Chapter formed from Zeta Gamma
List of Alpha Xi Delta chapters
List_of_Alpha_Xi_Delta_chapters
(1858-1981)" (PDF). Ann Arbor District Library. "Beta Pi Chapter of Omega Psi Phi". Beta Pi Chapter of Omega Psi Phi. Bro. Neil A. Butler (deceased) became the first
List_of_Omega_Psi_Phi_members
Chapter formed from the local chapter of Phi Omega Pi. Chapter formed from the local group Phi Delta Rho, established in 1923. Sorority is defunct.
List of Auburn University fraternities and sororities
List_of_Auburn_University_fraternities_and_sororities
the mother chapter of Sigma Delta Phi at the University of Michigan. In the Philippines Counterpart of Zeta Beta Rho. Counterpart of Mussaenda Honor Sorority
List of fraternities and sororities in the Philippines
List_of_fraternities_and_sororities_in_the_Philippines
resulting in the out-of-sequence chapter name Lambda Rho. This chapter was formed in 1868 by absorbing Kappa Phi Lambda, established in 1866. Its charter was
List of Beta Theta Pi chapters
List_of_Beta_Theta_Pi_chapters
Concept in statistics
{\displaystyle \operatorname {tr} (\rho _{1}\rho _{2})={\frac {1}{2\pi }}\iint _{\mathbb {R} ^{2}}\phi _{1}(1;\mu ,\nu )\phi _{2}(1;\mu ,\nu )^{*},d\mu ,d\nu
Kernel_density_estimation
Kappa Alpha - Rho Upsilon Omega. Retrieved May 30, 2023. "About Us". Rho Phi Omega AKA. Retrieved May 30, 2023. "Chapter Information". AKA Rho Chi Omega.
List of Alpha Kappa Alpha chapters
List_of_Alpha_Kappa_Alpha_chapters
University of Toronto. Rho chapter was revived as Rho Deuteron by absorbing Rho Sigma, established in 1922. Chapter formed from Phi Delta Pi, established in
List of Kappa Kappa Gamma chapters
List_of_Kappa_Kappa_Gamma_chapters
Sigma Pi is a collegiate fraternity in North America. It was founded as Tau Phi Delta at Vincennes University on February 26, 1897. In 1907, the fraternity
List_of_Sigma_Pi_chapters
The Pi Kappa Phi fraternity has initiated over 100,000 members since it was founded in 1904. Following is a list of notable Pi Kappa Phi initiates, are
List_of_Pi_Kappa_Phi_members
in 1952. Became the Epsilon Pi chapter of Phi Sigma Kappa with the national merger. Became the Epsilon Rho chapter of Phi Sigma Kappa with the national
List of Phi Sigma Epsilon chapters
List_of_Phi_Sigma_Epsilon_chapters
International historically African American collegiate fraternity
Sigma Gamma Rho (1922) and Iota Phi Theta (1963) were founded at Butler University and Morgan State University, respectively. In 1940, Alpha Phi Alpha, Alpha
Alpha_Phi_Alpha
chapter of Alpha Gamma Delta. Chapter formed from Pi Sigma, established in 1926. Chapter formed from Sigma Rho, established in 1923 at the Alabama Polytechnic
List of Pi Kappa Sigma chapters
List_of_Pi_Kappa_Sigma_chapters
Extension of the scalar spherical harmonics for use with vector fields
{\begin{aligned}\mathbf {\Phi } _{10}&=-{\sqrt {\frac {3}{4\pi }}}\sin \theta \,{\hat {\mathbf {\varphi } }},\\\mathbf {\Phi } _{11}&={\sqrt {\frac {3}{8\pi }}}e^{i\varphi
Vector_spherical_harmonics
Technique for the generative modeling of a continuous probability distribution
p_{t}=[\phi _{t}]_{\#}\pi _{0}} by the pushforward measure operator. In particular, [ ϕ 1 ] # π 0 = π 1 {\displaystyle [\phi _{1}]_{\#}\pi _{0}=\pi _{1}} . The probability
Diffusion_model
list of Pi Lambda Phi notable Alumni Brothers. Pi Lambda Phi is a fraternity in the United States. Membership Directory, 2010, Pi Lambda Phi Inc. "Archived
List_of_Pi_Lambda_Phi_members
Alpha Gamma Rho is a social and professional agricultural fraternity. In the following list, active chapters are indicated in bold and inactive chapters
List of Alpha Gamma Rho chapters
List_of_Alpha_Gamma_Rho_chapters
Application of Lagrangian mechanics to field theories
{L}}(\mathbf {x} ,t)=-\rho (\mathbf {x} ,t)\delta \Phi (\mathbf {x} ,t)-{2 \over 8\pi G}(\nabla \Phi (\mathbf {x} ,t))\cdot (\nabla \delta \Phi (\mathbf {x} ,t))
Lagrangian_(field_theory)
Type of field appearing in the Lagrangian
{\frac {d^{4}p}{{\left(2\pi \right)}^{4}}}\left[{\tilde {\phi }}(p)\left(p_{\mu }p^{\mu }-m^{2}+i\varepsilon \right){\tilde {\phi }}(-p)+J(p){\frac {1}{p_{\mu
Source_field
as Beta Rho (local), which had formed in 1904. Originated as Alpha Gamma (local), which had formed earlier in 1908. Originated as Zeta Iota Phi (local)
List_of_Chi_Omega_chapters
American collegiate sorority (1922–1946)
Phi Omega Pi (ΦΩΠ) was a national collegiate sorority operating in the United States from 1922 until 1946, when its chapters were absorbed by several larger
Phi_Omega_Pi
American Latina collegiate sorority
Promoviendo Comunidad/Lambda Pi Chi Sorority, Inc. Retrieved December 14, 2023. "Rho Chapter". Latinas Promoviendo Comunidad/Lambda Pi Chi Sorority, Inc. Retrieved
Lambda_Pi_Chi
North American collegiate fraternity
undergraduate members. Beta Theta Pi is the oldest of the three fraternities that formed the Miami Triad, along with Phi Delta Theta and Sigma Chi. Students
Beta_Theta_Pi
Study of still or slow electric charges
{\displaystyle \Phi _{E}=\oint _{S}\mathbf {E} \cdot \mathrm {d} \mathbf {A} ={Q_{\text{enclosed}} \over \varepsilon _{0}}=\int _{V}{\rho \over \varepsilon
Electrostatics
Map from algebra to geometric transforms
{\displaystyle \rho } in the sense that ρ ∘ ϕ = π ∘ σ {\displaystyle \rho \circ \phi =\pi \circ \sigma } , where π {\displaystyle \pi } is the quotient
Projective_representation
Calculation technique for classical electrostatics
_{0}^{2\pi }\int _{0}^{\infty }\sigma \left(\rho \right)\,\rho \,d\rho \,d\theta \\[6pt]&={\frac {-qa}{2\pi }}\int _{0}^{2\pi }d\theta \int _{0}^{\infty
Method_of_image_charges
Metric in quantum mechanics
{\displaystyle \max _{\Pi }\delta (P_{\Pi ,\rho },P_{\Pi ,\sigma })\leq T(\rho ,\sigma ),} where P Π , ρ {\displaystyle P_{\Pi ,\rho }} denotes the classical
Trace_distance
Type of electromagnet formed by a coil of wire
B_{z}={\frac {\mu _{0}I}{2\pi }}{\frac {1}{l}}\left(K(m)+{\frac {R-\rho }{R+\rho }}\Pi (n,m)\right)\left.{\frac {\zeta }{\sqrt {(R+\rho )^{2}+\zeta ^{2}}}}\right|_{\zeta
Solenoid
Fan that induces gas flow mostly parallel to the shaft
{1}{2}}C_{L}\rho w^{2}({\frac {l}{s}}){\frac {\sin(\beta -\phi )}{\cos \phi }}={\frac {1}{2}}C_{D}\rho w^{2}({\frac {l}{s}}){\frac {\sin(\beta -\phi )}{\sin \phi }}}
Axial_fan_design
(local) in 1894. Originated as Phi Rho Beta (local) in 1897. Originated as Phi Sigma Delta (local) in 1900. Originated as Pi Theta (local) in 1903. Withdrew
List of Alpha Delta Phi chapters
List_of_Alpha_Delta_Phi_chapters
RHO PI-PHI
RHO PI-PHI
RHO PI-PHI
RHO PI-PHI
RHO PI-PHI
RHO PI-PHI
RHO PI-PHI
RHO PI-PHI
RHO PI-PHI