activity
20102024
most citedWeights of the mod kernel of the theta operators

3 citations · 16 across the 15 of their papers we have counts for

collaborators

15 papers

math.NT2024

Congruences for Siegel modular forms of nonquadratic nebentypus mod

Siegfried Boecherer, Toshiyuki Kikuta

We prove that weights of two Siegel modular forms of nonquadratic nebentypus should satisfy some congruence relations if these modular forms are congruent to each other. Applying t…

math.NT2023

On -adic Siegel Eisenstein series from a point of view of the theory of mod singular forms

Siegfried Boecherer, Toshiyuki Kikuta

We show that the -adic Siegel Eisenstein series of general degree attached to two kind of number sequences are both linear combinations of genus theta series of level , by ap…

math.NT2019

A ring of symmetric Hermitian modular forms of degree with integral Fourier coefficients

Toshiyuki Kikuta

We determine the structure over of the ring of symmetric Hermitian modular forms with respect to of degree (with a character), whose Fourie…

math.NT2016★ 3 cited

Weights of the mod kernel of the theta operators

Siegfried Boecherer, Toshiyuki Kikuta, Sho Takemori

We give some relations between the weights and the prime of elements of the mod kernel of the generalized theta operator . In order to construct examples of the mo…

math.NT2016★ 3 cited

Note on mod p property of Hermitian modular forms

Toshiyuki Kikuta, Shoyu Nagaoka

The mod kernel of the theta operator is the set of modular forms whose image of the theta operator is congruent to zero modulo a prime . In the case of Siegel modular forms,…

math.NT2015★ 3 cited

Sturm bounds for Siegel modular forms of degree 2 and odd weights

Toshiyuki Kikuta, Sho Takemori

We correct the proof of the theorem in the previous paper presented by the first named author, which concerns Sturm bounds for Siegel modular forms of degree and of even weight…