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math.AG2025
Hermitian -theory and Milnor-Witt motivic cohomology over
Håkon Kolderup, Oliver Röndigs, Paul Arne Østvær
The theme of this paper is to compute hermitian -groups in terms of the recently developed theory of Milnor-Witt motivic cohomology. Our approach makes use of the very effective…
math.GM2025
A symmetry approach to number tricks
Håkon Kolderup
We generalize the classical "1089-number trick", which states that a certain combination of addition, subtraction and swapping the digits of a three-digit number will always output…