Evectant

Last updated October 21, 2025

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 James Sylvester.^[1]

References

↑ Sylvester, James (1854). The Cambridge and Dublin mathematical journal. Macmillan. p. 95.

Further reading

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

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