Witt vectors and truncation posets
classification
🧮 math.AC
math.AGmath.ATmath.CTmath.NT
keywords
truncationvectorswittposetsmapsadditiondefineencode
read the original abstract
One way to define Witt vectors starts with a truncation poset $S \subset \mathbb{N}$. We generalize Witt vectors to truncation posets, and show how three types of maps of truncation posets can be used to encode the following six structure maps on Witt vectors: addition, multiplication, restriction, Frobenius, Verschiebung and norm.
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