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math-ph2025
Identifying the simple finite-dimensional Lie algebras over by means of simple sequences
Kai Neergård
A novel method of determining which Dynkin diagrams represent simple finite-dimensional Lie algebras over is presented. It is based on a condition that is both necessa…
math-ph2020
Fock space dualities
K. Neergård
A general theorem due to Howe of dual action of a classical group and a certain non-associative algebra on a space of symmetric or alternating tensors is reformulated in a setting…