## Posts

### eta^2 = 0

### The Weyl character formula

### The Hodge conjecture

### Confusion about factorization algebras

### May nilpotence

### The Browder bracket

### Update

### The secretary problem

### The motivic Rees bundles

### Infinite quaternionic projective space is not a H-space

### Another nilpotence theorem

### How to prove the nilpotence theorem

### Representations = root data

### Nonabelian Hodge theory

### Deforming the de Rham space

### D-modules

### Moduli of parabolic subgroups

### Faces of monoids

### The transfer map and a result of Segal's

### Stuff about partially ordered abelian groups

### Barr-Beck for QCoh

### The alpha family

### Representations of partially ordered abelian groups

### The Ran space

### Anomalies, cobordisms, and the Atiyah-Patodi-Singer index theorem

### Brauer-Wall spaces and algebraic K-theory

### Filtrations

### bo-resolutions

### Exponential sums

### Integers expressible as sums of two dth powers

### E(n)-local spectra and the AHSS

### The Turyn construction

### Homotopy vs strict colimits

### Preimages under the A-hat and Witten genera

### The Witten genus at p=2

### Chromatic splitting, redux

### A question related to chromatic splitting

### Quadratic reciprocity

### The Witten genus is surjective at p=3

### Weiss calculus and unstable thick subcategories

### Calculus and chromatic theory

### Structures on Moore spectra

### TQFTs and height n

### Twists of cohomology theories

### Mahowald's eta_j family

### Realizing A(1) equivariantly

### The ABS orientation and the Witten genus

### A love letter to E_2-rings

### Invertible TQFTs

### Dijkgraaf-Witten theory

### Cohen-Moore-Neisendorfer and Ravenel's spectra

### Mahowald-Ravenel-Shick and Anick's fibration

### Hawking radiation

### Certain finite Thom spectra

### Complex orientations of Thom spectra

### Maps between Morava E-theories

### Defining the logarithm at small heights

### Computing the logarithm at small heights

### Tate spectra

### Gonality of modular curves

### The moduli of p-divisible groups

### Divided powers and the sphere spectrum

### Constructing truncated Brown-Peterson spectra

### Lifting vector bundles

### Additive degeneration and the Steenrod algebra

### Hodge theory and Hopf invariant one

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