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Daily Overview |
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CA1: Computer Algebra Location: D406 Session Chair: Anne Frühbis-Krüger Session Chair: Alheydis Geiger | |
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Computing A-resultants via direct images 1: RPTU Kaiserslautern, Germany; 2: ISG Stuttgart In his paper ``Calculating discriminants by higher direct images'' from '94 J. Weyman introduces a method for computing so-called $A$-resultants. However, his techniques seem to not have been widely used for practical computations beyond some special cases like projective space and products thereof. Picking up on Weyman's ideas, we render his partially non-constructive approach into a full algorithm, which realizes a functor for direct images in the derived category of coherent sheaves on toric varieties. A fairly competitive prototype of our algorithm is implemented in the computer algebra system OSCAR. | |
