Posts
- Thu 29 May 2014 - Inclusion--Exclusion Counts Onto Functions
- Thu 15 May 2014 - Arzelà--Ascoli Converts Equicontinuity into Compactness
- Tue 15 April 2014 - Completion of Finite Modules Is Tensoring with the Completed Ring
- Tue 11 February 2014 - Mayer--Vietoris Computes Homology from Two Pieces - updated: Sun 30 March 2014
- Sun 28 July 2013 - The Degree of a Sphere Map Is Its Action on Top Homology - updated: Sat 01 March 2014
- Wed 26 February 2014 - Frobenius Satisfies a Quadratic Equation on an Elliptic Curve
- Thu 06 February 2014 - Quadratic Reciprocity Turns One Odd Prime around Another
- Thu 09 January 2014 - Quasi-Coherent Sheaves on an Affine Scheme Recover Modules
- Sat 04 January 2014 - The Functor of Points Tests a Scheme on Every Ring
- Wed 23 October 2013 - Poincaré Duality Pairs Complementary Degrees
- Sat 15 October 2011 - The Fundamental Matrix Sums Visits before Absorption - updated: Wed 28 August 2013
- Mon 26 August 2013 - Intersection Multiplicity Is a Local Algebra Length
- Fri 16 August 2013 - Partitions of an Exponent Classify Abelian p-Groups
- Thu 08 August 2013 - The Exponential Map Sends Lie Algebra Directions to One-Parameter Subgroups
- Thu 25 July 2013 - Triangle-Free Planar Graphs Have an Even Stronger Bound
- Tue 23 July 2013 - Rook Polynomials Encode Nonattacking Placements
- Fri 19 July 2013 - Dirichlet Convolution Multiplies over Divisor Splittings
- Tue 02 July 2013 - Euler's Partition Product Is a q-Series Identity
- Wed 08 May 2013 - Projective Modules Lift through Surjections
- Thu 02 May 2013 - The Lifting Criterion Is a Subgroup Condition