The n-Category Café

Octonions and the Standard Model (Part 13)

Define the Standard Model gauge group to be S ( U ( 2) × U ( 3)), the subgroup of SU ( 5) consisting of block diagonal matrices with a 2 × 2 block and then a 3 × 3 block. (This is isomorphic to the ...
IEEE

Controlled Invariant Sets: Implicit Closed-Form Representations and Applications

Abstract: In this article, we revisit the problem of computing (robust) controlled invariant sets for discrete-time linear systems. Departing from previous approaches, we consider implicit, rather ...
earth

Physicists reconfirm that light speed stays constant, even at extreme energies and colors

Physicists have checked again whether light of different colors travels at different speeds, and once more it seems not to budge. They timed energetic photons from distant cosmic blasts to see whether ...
IEEE

Enhanced Invariant Feature Joint Learning via Modality-Invariant Neighbor Relations for Cross-Modality Person Re-Identification

Abstract: Cross-modality visible-Infrared person re-identification (cm-ReID) is extremely challenging due to the huge modality discrepancy between RGB and IR modalities. Existing methods focus on the ...