David Fithian at UPenn Math
		David Fithian University of Pennsylvania Mathematics Department David Rittenhouse Labs Philadelphia, PA   19104-6395 e-mail: office: ..phone: ..hours: fithian at math.upenn.edu DRL 4C13 (215) 898-5975 --- Who? What? I am a fifth year graduate student here at UPenn, chasing down a PhD in math. My interests orbit around number theoretical aspects of hyperbolic space and its quotients, and I'm forming a relationship with PSL2(R) and its discrete subgroups. Of particular, current interest are properties of cusp sets of Fuchsian groups uniformizing once-punctured tori and hyperbolic-geometric interpretations and generalizations of continued fractions and Dedekind sums. I also have some interest in low-dimensional topology, and would like to see some connections between knot theory and (algebraic?) number theory. - dissertation summary - AMS cover sheet - curriculum vita - research statement - teaching statement Papers Congruence obstructions to pseudomodularity of Fricke groups - arXiv:0707.4261 [math.NT], under     revision for C. R. Math. Acad. Sci. Paris On determining a triangle with two directed X-rays [PDF, 547kB] - thesis in geometric tomography Teaching - Spring 2006 - Math 241 (with Dr. van Erp) - Fall 2005 - Math 361 (with Prof. Gerstenhaber), Math 371 (with Prof. Gibney) - Spring 2005 - Math 114 (with Dr. Stovall) - Fall 2004 - Math 114 (with Prof. Haglund) Links The Generics - Math Advising - math help, Maple help, Sunday reviews, online help! - Math at Penn - Oregon State University - at which I did my undergrad work - Math/Physics/Astronomy Library at Penn Reference - Mathworld - Planetmath - Wikipedia (math section) Other - Previous Oral Exams - now with sweet, sweet syllabi - aleax.net - my barren personal site... or token domain, if you like

last updated: 23 March 2008


"Mathematics... is frightening." - T.P.
"It's confusing, but it's true..." - T.C.
"Moduli space, moduli stack, moduli this, moduli that" - F.P.
(on 3D 2-handles) "It's like an igloo built by a stupid eskimo" - J.E.
"We're looking at S⁴. There it is. That's it." [gestures at blank chalkboard] - R.S.
"Say n = 2d. Since we have plenty of letters, we can do that." - R.P.
"The physical concept of sets of sets of natural numbers seems... implausible." - D.M.
"In Brazil, Thursday is Morita equivalence day." - J.B.
"You have to smoke something kinda heavy to appreciate this." - T.C.
"There's one thing mankind can handle... and that's diagonalizing a quadratic form." - P.S.
"p is never 2 in a number theory seminar." - G.H.
"I'm a groupoid groupie." - J.B.
"This is just a blizzard of symbols." - T.C.
"Big chalk for big theorems." - F.P.
"Math is like humor. It's possible not to get it." - G.S.
"It's a better conjecture because it's true." - T.C.
"My head's screwed on tight... but I've been having neck problems." - S.W.
"The zero ring has only very little interest when it comes to orderings." - L.H.
"It is not true what I now write." - J.R.