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1. CJM 1999 (vol 51 pp. 1277)
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Isomorphism Invariants for Projective Configurations An isomorphism invariant is an expression, defined for a
configuration in the projective plane, which takes the same value
for all isomorphic configurations. Examples are given as well as a
general method (Nehring sequences) for constructing such
invariants.
Category:51N15 |