obvious error:


     ---------------------------------
     -- code for method: poincare(Ideal)
     -- ../m2/matrix1.m2:548
     poincare Ideal := (I) -> poincare ((ring I)^1/I)



module Ideal := Module => (cacheValue symbol module) (
     I -> (
	  M := image generators I;
	  if I.cache.?poincare then M.cache.poincare = I.cache.poincare;
	  M))
