• In mathematics, the theta representation is a particular representation of the Heisenberg group of quantum mechanics. It gains its name from the fact...
    6 KB (1,306 words) - 15:52, 19 August 2024
  • the theta representation, it acts on the space of holomorphic functions on the upper half-plane; it is so named for its connection with the theta functions...
    33 KB (5,894 words) - 04:24, 6 October 2024
  • Thumbnail for Axis–angle representation
    {\displaystyle {\boldsymbol {\theta }}=\theta \mathbf {e} \,.} It is used for the exponential and logarithm maps involving this representation. Many rotation vectors...
    14 KB (2,033 words) - 07:00, 21 October 2024
  • quantum physics Theta representation, a particular representation of the Heisenberg group of quantum mechanics Theta wave, in biology Theta*, a pathfinding...
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  • Thumbnail for Theta function
    In mathematics, theta functions are special functions of several complex variables. They show up in many topics, including Abelian varieties, moduli spaces...
    67 KB (13,985 words) - 04:09, 9 November 2024
  • {\displaystyle \rho _{n}^{*}(e^{i\theta })=[e^{-in\theta }]=\rho _{-n}(e^{i\theta }).} That is to say, the dual of the representation ρ n {\displaystyle \rho _{n}}...
    10 KB (1,699 words) - 19:20, 8 October 2024
  • ={\begin{bmatrix}\cos \theta &-\sin \theta \\\sin \theta &\cos \theta \end{bmatrix}}{\begin{bmatrix}x\\y\end{bmatrix}}={\begin{bmatrix}x\cos \theta -y\sin \theta \\x\sin...
    99 KB (15,031 words) - 06:23, 11 October 2024
  • \left({\begin{pmatrix}e^{i\theta }&0\\0&e^{-i\theta }\end{pmatrix}}\right)=e^{im\theta }+e^{i(m-2)\theta }+\cdots +e^{-i(m-2)\theta }+e^{-im\theta }.} This expression...
    19 KB (3,369 words) - 05:42, 25 June 2024
  • Thumbnail for Adjoint representation
    {\begin{bmatrix}\theta &0\\0&-\theta \\\end{bmatrix}}=\theta {\begin{bmatrix}1&0\\0&0\\\end{bmatrix}}-\theta {\begin{bmatrix}0&0\\0&1\\\end{bmatrix}}=\theta (e_{1}-e_{2})...
    21 KB (3,516 words) - 09:22, 26 August 2024
  • Thumbnail for Phasor
    {\displaystyle Ae^{i(\omega t+\theta )}} is an analytic representation of A cos ⁡ ( ω t + θ ) . {\displaystyle A\cos(\omega t+\theta ).} Figure 2 depicts it...
    31 KB (4,997 words) - 17:15, 9 October 2024
  • Hn. One representation of the Heisenberg group which is important in number theory and the theory of modular forms is the theta representation, so named...
    27 KB (3,687 words) - 16:58, 25 May 2024
  • infinite-dimensional linear representation, the Weil representation. It was used by André Weil to give a representation-theoretic interpretation of theta functions, and...
    10 KB (1,422 words) - 16:52, 25 May 2024
  • Thumbnail for Variational autoencoder
    data and its latent representation as Prior p θ ( z ) {\displaystyle p_{\theta }(z)} Likelihood p θ ( x | z ) {\displaystyle p_{\theta }(x|z)} Posterior...
    26 KB (3,862 words) - 03:05, 14 October 2024
  • Norwegian Resistance Theta representation of the Heisenberg group This disambiguation page lists articles associated with the title Theta group. If an internal...
    221 bytes (61 words) - 15:44, 30 December 2019
  • mathematics, more specifically in group theory, the character of a group representation is a function on the group that associates to each group element the...
    24 KB (3,518 words) - 04:42, 6 June 2024
  • "h" or "b" Voiceless dental fricative (IPA: θ) Theta (Θ and θ), a Greek letter, corresponding to "th" Theta nigrum (ꝋ) for "obiit" ="died" Fita (Ѳ and ѳ)...
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  • Thumbnail for Compact group
    (e^{i\theta })=e^{ik\theta },\quad k\in \mathbb {Z} .} We now let Σ {\displaystyle \Sigma } denote a finite-dimensional irreducible representation of K...
    30 KB (4,472 words) - 09:28, 18 October 2022
  • and existence of the induced representation. Let ( θ , W θ ) {\displaystyle (\theta ,W_{\theta })} be a linear representation of a subgroup H {\displaystyle...
    105 KB (21,307 words) - 20:52, 9 October 2024
  • Thumbnail for Gamma distribution
    {\displaystyle f(x;k,\theta )={\frac {x^{k-1}e^{-x/\theta }}{\theta ^{k}\Gamma (k)}}\quad {\text{ for }}x>0{\text{ and }}k,\theta >0.} Here Γ(k) is the...
    64 KB (8,972 words) - 09:28, 10 October 2024
  • Phi Theta Kappa (ΦΘΚ or PTK) is an honor society for students of associate degree-granting colleges. Its headquarters are in Jackson, Mississippi and...
    27 KB (1,869 words) - 16:46, 29 October 2024
  • Thumbnail for Spherical harmonics
    spherical coordinate representation, ⟨ θ , φ | l m ⟩ = Y l m ( θ , φ ) {\displaystyle \langle \theta ,\varphi |lm\rangle =Y_{l}^{m}(\theta ,\varphi )} but...
    75 KB (12,420 words) - 22:06, 20 August 2024
  • θ } {\displaystyle \left\{1,e^{\pm i\theta }\right\}=\{1,\ \cos \theta +i\sin \theta ,\ \cos \theta -i\sin \theta \}} where i is the standard imaginary...
    56 KB (9,991 words) - 17:47, 5 November 2024
  • Thumbnail for Lorentz group
    Q_{1}={\begin{bmatrix}1&0&0&0\\0&\cos(\theta )&\sin(\theta )&0\\0&-\sin(\theta )&\cos(\theta )&0\\0&0&0&1\end{bmatrix}}=\exp \left(\theta {\begin{bmatrix}0&0&0&0\\...
    65 KB (9,740 words) - 02:08, 28 September 2024
  • Thumbnail for Bloch sphere
    {\begin{aligned}R_{x}(\theta )&=e^{(-i\theta X/2)}=\cos(\theta /2)I-i\sin(\theta /2)X={\begin{bmatrix}\cos \theta /2&-i\sin \theta /2\\-i\sin \theta /2&\cos \theta...
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  • mathematics, particularly q-analog theory, the Ramanujan theta function generalizes the form of the Jacobi theta functions, while capturing their general properties...
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  • Thumbnail for Spinor
    \left({\frac {\theta }{2}}\right)-i\sigma _{3}\sin \left({\frac {\theta }{2}}\right)\right]\sigma _{3}\left[\cos \left({\frac {\theta }{2}}\right)+i\sigma...
    72 KB (9,924 words) - 07:46, 15 October 2024
  • ISBN 9783110885583 Lion, G.; Vergne, M. (1980), The Weil representation, Maslov index and theta series, Progress in Mathematics, vol. 6, Birkhäuser, ISBN 3-7643-3007-4...
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  • Thumbnail for Parametric equation
    {\begin{aligned}x(\theta )&=(R-r)\cos \theta +d\cos \left({R-r \over r}\theta \right)\\y(\theta )&=(R-r)\sin \theta -d\sin \left({R-r \over r}\theta \right)\,...
    20 KB (2,881 words) - 03:24, 19 October 2024
  • t+\theta )}\ \ =\ e^{j|\omega |t}\cdot e^{j\theta },&{\text{if}}\ \omega >0,\\e^{-j(\omega t+\theta )}=\ e^{j|\omega |t}\cdot e^{-j\theta },&{\text{if}}\...
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  • Thumbnail for David Mumford
    group Mumford-Tate group Mumford measure Mumford vanishing theorem Theta representation Manin–Mumford conjecture Horrocks–Mumford bundle Deligne–Mumford...
    20 KB (2,086 words) - 02:04, 30 October 2024