ScalingStacks

3.1.5 [01NN]

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3.1.5

La somme directe ℱX∗,∗=⨁p,qℱXp,q\mathscr{F}_{X}^{*,*}=\bigoplus_{p,q}\mathscr{F}_{X}^{p,q} est faisceau en 𝒜X\mathscr{A}_{X}-modules bigradués, auquel l’involution JJ se prolonge.

Si ℱ\mathscr{F} est stable par multiplication, le faisceau ℱX\mathscr{F}_{X} est un faisceau de 𝐑\mathbf{R}-algèbres, et ℱ∗,∗\mathscr{F}^{*,*} est une ℱX\mathscr{F}_{X}-algèbre bigraduée, et JJ est un automorphisme de ℱX\mathscr{F}_{X}-algèbre.

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