User Grant Lakeland - MathOverflow

Grant Lakeland

Member for 14 years, 7 months
Last seen more than a month ago

ux1.eiu.edu/~gslakeland
Eastern Illinois University

3 Answers

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27 votes

Should the formula for the inverse of a 2x2 matrix be obvious?

answered Feb 22, 2012 at 15:33

3 votes

Canonical fundamental domain for a discrete subgroup Γ of SL₂(R) acting on hyperbolic plane

answered May 29, 2010 at 9:43

3 votes

Poincaré disk model: is this locus a known curve?

answered Aug 17, 2010 at 17:59