math1um / objects-invariants-properties

Objects, Invariants and Properties for Graph Theory (GT) automated conjecturing: in particular with the Sage program CONJECTURING: http://nvcleemp.github.io/conjecturing/
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Fix property is_heliotropic_plant, is_geotropic_plant #586

Open yirkajk opened 6 years ago

yirkajk commented 6 years ago

These properties are supposed to be defined in terms of nonnegative/nonpositive eigenvalues. Right now, they're only the positive/negative eigenvalues. Need to fix the properties, add doctests, and fix precomputed values.

It might be useful to add invariants card_nonnegative_eigenvalues(g) and card_nonpositive_eigenvalues(g).