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27
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Hirzebruch’s motivation of the Todd class

sep 27 at 19:10 John McKay 173●2

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What are D-branes, really?

oct 23 10 at 14:01 Urs Schreiber 6,458●13●21

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Computing the q-series of the j-invariant

aug 1 11 at 9:51 S. Carnahan♦ 25.6k●41●90