Lennart Meier

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Name Lennart Meier
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I am Whyburn Instructor at the University of Virginia, mostly interested in algebraic topology, especially stable homotopy theory, but also in algebraic geometry.
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Questions
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Old books still used

apr 21 at 2:11 unknown (google) 1●1

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Cohomologically trivial stacks

nov 20 at 20:06 Angelo 19.4k●3●47●75

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Group Completions and Infinite-Loop Spaces

aug 30 10 at 4:19 Torsten Ekedahl 17.9k●1●42●68

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Vector Bundles on the Moduli Stack of Elliptic Curves

apr 9 10 at 10:06 Lennart Meier 3,042●13●32

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Explicit integral representation theory

jul 17 10 at 22:40 Jack Schmidt 7,375●1●19●35

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Homotopy limits of quasi-categories

apr 24 12 at 18:51 Chris Schommer-Pries 10.2k●1●17●57

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Spaces with free MU-homology

jan 13 12 at 10:57 Lennart Meier 3,042●13●32

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Localizing Model Structures

nov 23 09 at 23:43 Urs Schreiber 6,459●13●21

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Answers
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Examples of common false beliefs in mathematics.
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Most intricate and most beautiful structures in mathematics
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What are Jacob Lurie’s key insights?
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Which math paper maximizes the ratio (importance)/(length)?
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Mathematical “urban legends”
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“Why the heck are the homotopy groups of the sphere so damn complicated?”
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Closed 3-manifolds with free abelian fundamental groups
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Do we still need model categories?
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Compact open topology
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New proofs to major theorems leading to new insights and results?
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`Naturally occuring' $K(\pi, n)$ spaces, for $n \geq 2$.
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Vanishing of higher homotopy groups of finite complexes
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Modern Source for Spectra (including Ring Spectra)
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de Rham cohomology and flat vector bundles
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Historical transition from classical homotopy to modern homotopy theory…
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What is the topology on hom-sets of spectra?
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Homology is computable because it is stable under suspension
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Theorems that are ‘obvious’ but hard to prove
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Can anyone give me a good example of two interestingly different ordinary cohomology theories?
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What is known about K-theory and K-homology groups of (free) loop spaces?
4
Algebraic Topology Beyond the Basics:Any Texts Bridging The Gap?
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Applications of Brouwer’s fixed point theorem
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A list of machineries for computing cohomology
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What do mathematicians currently do in conformal field theory (or more general field theory)
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A Learning Roadmap request: From high-school to mid-undergraduate studies
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manifold with given rational homology
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Learning roadmap for geometric topology
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Proof that the homotopy category of a stable $\infty$-category is triangulated
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Mayer-Vietoris implies Excision
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Derivators (in English)
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