Rémi Eismann · @decompwlj
142 followers · 420 posts · Server mathstodon.xyz
One day, one decomposition
A034683: Unitary abundant numbers: numbers k such that usigma(k) > 2*k
3D graph, threejs - webGL ➡️ https://decompwlj.com/3Dgraph/Unitary_abundant_numbers.html
2D graph, first 500 terms ➡️ https://decompwlj.com/2Dgraph500terms/Unitary_abundant_numbers.html
#decompwlj #maths #mathematics #sequence #OEIS #javascript #php #3D #unitary #abundant #numbers #usigma #graph #threejs #webGL
#webgl #threejs #graph #usigma #numbers #abundant #unitary #3d #php #javascript #oeis #sequence #mathematics #maths #decompwlj
Paul Secular · @secular
22 followers · 39 posts · Server mathstodon.xyzWhat would you say is the simplest / most #pedagogical #proof of Wigner's #theorem accessible to #physics students? #unitary #antiunitary
#antiunitary #unitary #physics #theorem #proof #pedagogical
Seth Axen 🪓 :julia: 🦖 · @sethaxen
712 followers · 483 posts · Server bayes.clubI've worked out that the injectivity radius under the Euclidean metric for the #unitary group U(n) is π and for real and special subgroups O(n), SO(n), and SU(n) is π√2.
This seems like a pretty basic property, but I can't find a single reference that gives the injectivity radii for any of these groups. Anyone know of one?
#unitary #differentialgeometry #liegroups #manifolds
Sam Nabi · @samnabi
86 followers · 45 posts · Server mstdn.caReally digging this website that feels like a #diy #zine. Call it #unitary #urbanism, #situationism, #lettrism, or #psychogeography, the writing feels stuck in the past but also somehow fresh.
Even dead political movements can teach us a thing or two.
#lettrism #diy #zine #unitary #urbanism #situationism #psychogeography