Kohnen-Waldspurger formula
imported>Pythagoras0님의 2013년 12월 30일 (월) 00:42 판
introduction
- chapter 15 of Unearthing the visions of a master: harmonic Maass forms and number theory
- study central values and derivatives of weight 2 modular L-functions
- In the 1980s, Waldspurger [205], and Kohnen and Zagier [135, 136, 137] established that certain half-integral weight modular forms serve as generating functions of a new type.
- Using the Shimura correspondence [192], they proved that certain coefficients of half-integral weight cusp forms essentially are square-roots of central values of quadratic twists of modular L-functions.
- Ono and Bruinier [67] have generalized this theorem of Waldspurger and Kohnen to prove that the Fourier coefficients of weight 1/2 harmonic Maass forms encode the vanishing and nonvanishing of both the central values and derivatives of quadratic twists of weight 2 modular L-functions.
formula
- There is a modular form $g(z)=\sum b_{E}(n)q^n$ such that if $\epsilon()=1$,
\[L(E(\Delta),1)=\alpha(\cdots)b_{E}(\Delta)^{2}\]
articles
- [67] Heegner divisors, L-functions, and Maass forms Jan Hendrik Bruinier;Ken Ono, Annals of Mathematics
- [135] W. Kohnen, Newforms of half-integral weight, J. Reine Angew. Math. 333 (1982) 32-72.
- [136] W. Kohnen, Fourier coefficients of modular forms of half-integral weight, Math. Ann. 271 (1985), 237-268. http://www.springerlink.com/content/p52527460724p36m/
- [137] W. Kohnen and D. Zagier, Values of L-series of modular forms at the center of the critical strip, Invent. Math. 64 (1981), no. 2, pages 175–198.
- [205] J.-L. Waldspurger, Sur les coefficients de Fourier des formes modulaires de poids demi-entier, J. Math. Pures Appl. (9) 60 (1981), no. 4, pages 375–484.