Just wondering, so feel free to ignore.
I noticed that MatrixSpace(GF(3), 4, 5).cardinality() raises an exception.
However, there is __len__:
sage: MatrixSpace(GF(3), 4, 5).__len__()
3486784401
sage: len(MatrixSpace(GF(3), 4, 5))
3486784401
but
sage: MatrixSpace(GF(2003), 4, 5).__len__()
1080485606479352381688319506340455348506693332851960692625585464401L
sage: len(MatrixSpace(GF(2003), 4, 5))
. . . OverflowError: long int too large to convert to int
I don't get this. Is `len` somehow internally redefined in Sage? Where?
What is the meaning of len and __len__? Should there be .cardinality() in
all Sage objects where it has some meaning?
--
Jori Mäntysalo,
Maybe returned to 4-year old and got questioning-age again.
