Evectant

In mathematical invariant theory, an evectant is a contravariant constructed from an invariant by acting on it with a differential operator called an evector. Evectants and evectors were introduced by Sylvester (1854, p.95).

References

Sylvester, James Joseph (1853), "On the calculus of forms, otherwise the theory of invariants", The Cambridge and Dublin Mathematical Journal, 8: 257–269
Sylvester, James Joseph (1854), "On the calculus of forms, otherwise the theory of invariants", The Cambridge and Dublin Mathematical Journal, 9: 85–103

This article is issued from Wikipedia - version of the 3/2/2015. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.