Konrad Völkel

Favourite blogposts

A painted reading room with no walls standing in a mown meadow in low afternoon light: two long tables hold the same books twice over in two different orders, and someone walks between them comparing. On one table lies a typewriter with keys missing from its middle row, and the queue waiting for the most worn volume on that table is not made of scholars but of travellers with bags, lined up across the grass to the horizon

Most read

The list below is what I like. This is what people actually read, measured over sixteen months; the two overlap less than you would think.

The really strange laptop-keyboard-asdf-jkl-not-working bug fixed.
Flat modules
Thom spaces
The four functors of Grothendieck in examples
What is ... a reductive group?

My favorite blogposts from the years 2009--2011

Categorical background for A¹-homotopy theory (simplicial model categories)
Linux, OCR and PDF – problem solved
the smell file format
A manifold whose functions are the smooth functions on the real line with rational period
Review – Seife: Decoding the Universe
Flat modules
Some thoughts on AQFT (algebraic or axiomatic quantum field theory)
Properties of Scheme Morphisms
Howto's for software

More recent posts (from 2012 and later)

Is it possible to prove Serre's Problem (the Quillen-Suslin theorem) via Motivic Homotopy Theory?
Mathematics Resources
Thom spaces
Universal coverings of simplicial groups
What is ... a reductive group?
A¹-fundamental groups of isotropic groups
Some Interesting Rings
Lagrange and the Supernaturals
An arrow notation for annotations
What's a point of this?

More!

I also keep a list of articles related to my PhD project and you can start browsing through all articles as well.

The talks, lecture notes and cheat sheets are on a page of their own: notes and talks.

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Every category, with the tags that turn up on its posts. The number behind a tag counts the posts it has in that category, so the same tag can stand under two of them.