Jakob Werner

I’m a mathematician and computer programmer based in Regensburg, Germany. I enjoy fun and easy math questions, mostly within algebraic geometry. I like constructive mathematics, mainly for aesthetical reasons, and try to think and write constructively when possible.

I’m also interested in literature, history, sociology, music, economics and philosophy and I enjoy reading books from these fields.

I try to be friendly towards my fellow creatures, which of course has political implications.

Finitely Generated Projective Modules are Locally Free

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Finitely Generated Projective Modules are Locally Free

Invariant Subschemes of Affine $\IG_m$-Schemes

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Invariant Subschemes of Affine $\IG_m$-Schemes

Graded Rings and Affine $\IG_m$-Schemes

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Graded Rings and Affine $\IG_m$-Schemes

Sorted Labelled Trees

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Sorted Labelled Trees