?? woolf's preface in kirwan and woolf ... talks about "rational" fan ... ??? ....

??? hmmm ... ?? relationship to some generalizations i thought about a bit ... ??? ....

"When the fan is rational there is a corresponding toric variety ..." .... ??? .....

?? (P,+) spectrum of "divisible" commutative monoid ??? .... ??? .... galois ... universal cover .... rational vs real ... ??? ....