L’algèbre n’est qu’une géométrie écrite, la géométrie n’est qu’une algèbre figurée. — Sophie Germain
rapha
Recent activities
- Commented on A geometrical explanation of the determinant formula for matrices
- Published post More facts about the resultant over a UFD
- Published post Classic results on homogeneous polynomials
- Published post Some fun with Euler’s identity
- Published post Computing the prime ideals in the ring of polynomials with integer coefficients
- Published post Books
- Commented on Two rules, same function; two functions, same rule
- Published post Quote Garden
- Commented on Quantum Mechanics: An Introduction
- Published post Relative primality of polynomials over a UFD is preserved over the fraction field
- Published post Some notes on relative primality
- Published post Ideal-theoretic characterization of irreducibility
- Published post Computing the prime ideals in the ring of complex polynomials in two variables
- Commented on Algèbre linéaire : Parlons de matrice d’expression, au lieu de matrice de passage
- Published post Examples of funny a priori analytic knowledge
- Published post Revisiting the infinitude of primes
- Published post Minimal polynomial, naturally
- Published post The subobject classifier in the category of representations of a monoid
- Published post On subobject classifiers
- Published post The many faces of Nakayama’s Lemma
- Published post On integral morphisms
- Published post On algebras over a ring
- Published post On the cotangent space on a smooth manifold, defined from its structure sheaf
- Published post On direct limits, and computing them from cofinal subsets
- Published post Skyscraper sheaves
- Published post A characteristic feeling: exploring characteristic classes - Part 1, cohomology
- Published post The dominance order on partitions
- Published post A simpler description for the ideal generated by the symmetric polynomials in two variables
- Published post Galois connections: examples and theory
- Published post Making determinants my friends
- Published post Filters are generalized subsets, and other small remarks on filters
- Registered an account