>     In discrete math, is zero positive/negative or neither?
JE> neither.
 CC>     Neither odd or even, neither negative or positive; for all intents
 CC>     an purposes, I declare it doesn't exist, but, is only an 
 CC>     additive indentity.
zero is even. we have enough of *one* c.s. old professor, mr. Dancea, who 
will argue till the end of the world that zero is neither odd nor even, but 
that breaks all uniformity in the integer math, which should be perfect. if 
we call the integers Z, and define even numbers as 2Z, well, 0 is of them. it 
wouldn't make much sense to say the opposite, as it's much more often that we 
need even numbers to include the 0 than not.
matju
--- Maximus 3.01
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