activity
20142026
most citedC-motivic modular forms

14 citations · 24 across the 15 of their papers we have counts for

collaborators

15 papers

math.NT2026

The de Rham and the syntomic logarithm

Matthias Flach, Achim Krause, Baptiste Morin

We define and study an integral refinement of the inverse of the Bloch-Kato exponential map which we call the de Rham logarithm. Our main tool to analyze the de Rham logarithm is t…

math.KT2024

Exact bounds for even vanishing of

Achim Krause, Andrew Senger

In this note, we prove that if and only if divides and , refining the even vanishing theorem of Antieau, Nik…

math.KT2024

On the -theory of

Benjamin Antieau, Achim Krause, Thomas Nikolaus

We give an explicit algebraic description, based on prismatic cohomology, of the algebraic K-groups of rings of the form where is a p-adic field and is a non-trivia…

math.AT2023

Witt vectors with coefficients and TR

Emanuele Dotto, Achim Krause, Thomas Nikolaus +1

We give a new construction of -typical Witt vectors with coefficients in terms of ghost maps and show that this construction is isomorphic to the one defined in terms of formal…

math.AG2023

Prismatic cohomology relative to -rings

Benjamin Antieau, Achim Krause, Thomas Nikolaus

We develop prismatic and syntomic cohomology relative to a -ring. This simultaneously generalizes Bhatt and Scholze's absolute and relative prismatic cohomology and shows that t…

math.AC2023

A note on quadratic forms

Fabian Hebestreit, Achim Krause, Maxime Ramzi

For a field extension we consider maps that are quadratic over but whose polarisation is only bilinear over . Our main result is that all such are automatically quadra…