Do people agree that the first False should be True?
{{{
sage: x, y = QQ['x', 'y'].gens()
sage: R.<x, y> = QQ[]
sage: (x / y)*y in R
False
sage: R((x / y)*y) == x
True
sage: R((x / y)*y) == (x/y)*y
True
}}}
For comparison:
{{{
sage: (2 / 3)*3 in ZZ
True
}}}
Nick
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