Scholl, A. J. Motives for modular forms. (English) Zbl 0760.14002 Invent. Math. 100, No. 2, 419-430 (1990). P. Deligne defined in Sémin. Bourbaki 1968/69, Exp. No. 355, Lect. Notes Math. 179, 139–172 (1971; Zbl 0206.49901) the \(\ell\)-adic parabolic cohomology groups attached to holomorphic cusp forms of weight \(\geq 2\) on congruence subgroups of \(\mathrm{SL}_2(\mathbb{Z})\) as certain subgroups in the \(\ell\)-adic cohomology of Kuga-Sato varieties. In the paper under review, the author constructs these groups as the kernel of certain projectors in the Chow ring of algebraic correspondences modulo rational equivalence. Then the author calls a Grothendieck motive (with coefficients in a number field \(L)\) an object of the category of motives over \(\mathbb{Q}\) in which \(\operatorname{Hom}(h(Y),h(X))\) is the group of algebraic cycles on \(X\times Y\) of codimension \(\dim Y\), tensored with \(L\), modulo homological equivalence. The following theorem is proved: If \(f=\sum^ \infty_{m=1}a_mq^m\) is a normalized newform of weight \(w\), level \(n\) and character \(\chi\), and \(L\) is the field generated by the coefficients \(a\), then there is a Grothendieck motive \(M(f)\) over \(\mathbb{Q}\) with coefficients in \(L\) such that if \(p\not| nl\), and \(\lambda\) is a prime of \(L\) dividing \(\ell\), then the \(\lambda\)-adic realization \(H_\lambda(M(f))\) of \(M(f)\) uniramified at \(p\), and the characteristic polynomial of a geometric Frobenius at \(p\) is the Hecke polynomial \(T_p(X) = X^2 + a_pX + chi(p)p^{w-1}\).A relation between the \(p\)-adic representation of \(\mathrm{Gal}(\overline{\mathbb{Q}}_p/\mathbb{Q}_p)\) attached to a modular form, and the action of the Hecke operator \(T_p\) is derived as application. Reviewer: A.M.Shermenev (Moskva) Cited in 7 ReviewsCited in 103 Documents MSC: 14A20 Generalizations (algebraic spaces, stacks) 14F30 \(p\)-adic cohomology, crystalline cohomology 14G35 Modular and Shimura varieties 11G18 Arithmetic aspects of modular and Shimura varieties Keywords:\(\ell\)-adic parabolic cohomology groups; Kuga-Sato varieties; Grothendieck motive; Hecke polynomial Citations:Zbl 0206.49901 × Cite Format Result Cite Review PDF Full Text: DOI EuDML References: [1] Beilinson, A.A.: Higher regulators and values ofL-functions. J. Sov. Math.30, 2036-2070 (1985) · Zbl 0588.14013 · doi:10.1007/BF02105861 [2] Beilinson, A.A.: Higher regulators of modular curves. Applications of algelbraicK-theory to algebraic geometry and number theory. Contemp. Math.55, 1-34 (1986) [3] Bloch, S.A., Ogus, O.: Gersten’s conjecture and the homology of schemes. Ann. Sci. Éc. Norm. Super., VI. Ser.7, 181-202 (1974) · Zbl 0307.14008 [4] Deligne, P.: Formes modulaires et représentationsl-adiques. 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