Conjecture on the explicit slope-and-L\mathscr L-invariant list formula

Let pp be a prime and N=1N=1. For a pp-new eigenform fSk(Γ)f\in S_k(\Gamma) of slope hh, let Lf\mathscr L_f be its L\mathscr L-invariant and define

m~p(f)=max(m~p(h),vp(Lf)).\widetilde m_p(f)=\max\left(\left\lfloor\widetilde m_p(h)\right\rfloor,\left\lceil-v_p(\mathscr L_f)\right\rceil\right).

Here m~p(h)\widetilde m_p(h) is a non-negative function. Explicit slope-and-L\mathscr L-invariant list conjecture. For 3p113\leq p\leq 11, Question 4.9 has an affirmative answer witnessed by

m~p(h)=logp(h)+1\widetilde m_p(h)=\left\lfloor\log_p(h)\right\rfloor+1

when h1h\geq1; equivalently, the list of these m~p(f)\widetilde m_p(f) values equals the list of integers jj for which dj(k)>dj1(k)d_j(k)>d_{j-1}(k), with multiplicity dj(k)dj1(k)d_j(k)-d_{j-1}(k). The source presents this as a falsifiable conjecture supported by numerical data, while the immediately preceding question asks whether some such function exists; no proof is given.

Sources & referencesView supporting material

Primary source

John Bergdall, “Upper bounds for constant slope p-adic families of modular forms”, arXiv:1708.03663 (2019).

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