I am a Lecturer in Pure Mathematics in the School of Mathematical Sciences at Queen Mary University of London.

Office: B53, Mathematics Building, Mile End campus (number 4 on
this
map)

Telephone:
020 7882 5520

Email: `a.fink@qmul.ac.uk`

Office hours: see my entry on the School's pages. Or email for an appointment.

Here is my CV.

Skip to: Teaching Administration Research Publications

In Semester B, I taught
**MTH4104, Introduction to Algebra**.

In Semester A, I filled in for Prof. Rob Wilson teaching the last three weeks of MTH5112, Linear Algebra I.

During my postdoctoral position at North Carolina State, I taught:

- Calculus for Life and Management Sciences B (MA231): spring 2013
- Applied Differential Equations I (MA341): spring 2012, spring 2011, fall 2010
- Calculus III (MA242): fall 2011

I am the Programme Director for the following study programmes:

- G100, BSc in Mathematics
- G110, BSc in Pure Mathematics
- G102, MSci in Mathematics (though see here instead if you began your first year in 2011 or earlier)

My research interests are principally in algebraic combinatorics, especially where commutative algebra or algebraic geometry apply; matroid theory and tropical geometry have been recent themes. Here is a research statement from a couple years ago.

**Journal articles, conference papers, preprints**-
- with Jeffrey Giansiracusa and Noah Giansiracusa,
*Tropical linear ideals*, in preparation. - with Jenna Rajchgot and Seth Sullivant,
*Matrix Schubert varieties and Gaussian graphical models*, in preparation. *A generating function method for impartial games*, in preparation. Slides.- Andrew Berget and Alex Fink,
*Equivariant K-classes of matrix orbit closures*, arXiv:1306.1810 (pdf). - Alex Fink and Felipe Rincón,
*Stiefel tropical linear spaces*, arXiv:1305.6329 (pdf). - Alex Fink and Luca Moci,
*Matroids over a ring*, to appear in Journal of the European Mathematical Society. arXiv:1209.6571 (pdf). Slides: motivation, some details. - Alex Fink, Aviezri Fraenkel, Carlos Santos,
*Lim is not slim*, to appear in International Journal of Game Theory, doi:10.1007/s00182-013-0380-z. Online at IJGT. - Alex Fink,
*Lattice games without rational strategies*, Journal of Combinatorial Theory, Series A**119**(2012), 450–459. doi:10.1016/j.jcta.2011.10.005. arXiv:1106.1883 (pdf). Slides. - Alex Fink and David E Speyer,
, Duke Math. J.*K*-classes of matroids and equivariant localization**161**no. 14 (2012), 2699–2723. arXiv:1004.2403 (pdf). Slides. - Alex Fink,
*Tropical cycles and Chow polytopes*, Beiträge zur Algebra und Geometrie**54**no. 1 (2013), 13–40. Online at Beiträge. arXiv:1001.4784 (pdf). Slides. Video of the talk, MSRI, 16 October 2009. - Harm Derksen and Alex Fink,
*Valuative invariants for polymatroids*, Advances in Mathematics**225**no. 4 (2010), 1840–1892. doi:10.1016/j.aim.2010.04.016. arXiv:0908.2988 (pdf). Slides. - Alex Fink,
*The binomial ideal of the intersection axiom for conditional probabilities*, J. of Algebraic Combinatorics**33**issue 3 (2011), 455–463. doi:10.1007/s10801-010-0253-5. arXiv:0902.1495 (pdf). Slides. - Alex Fink, Richard Nowakowski, Aaron Siegel, David Wolfe,
*Toppling conjectures*, to appear in Games of No Chance 4, MSRI Publications volume 63. - Alex Fink and Benjamin Iriarte Giraldo,
*Bijections between noncrossing and nonnesting partitions for classical reflection groups*, Portugaliae Mathematicae**67**fasc. 3 (2010), 369–401. arXiv:0810.2613 (pdf). - Alex Fink, Richard Guy and Mark Krusemeyer,
*Partitions with parts appearing at most thrice*, Contributions to Discrete Math.**3**(2008), #79. - Federico Ardila, Alex Fink and Felipe Rincón,
*Valuations for matroid polytope subdivisions*, Canadian Journal of Mathematics, published electronically on July 29, 2010. doi:10.4153/CJM-2010-064-9. arXiv:0710.4424 (pdf). - Alex Fink, Jörg Denzinger, and John Aycock,
*Extracting NPC behavior from Computer Games using Computer Vision and Machine Learning Techniques*, IEEE Symposium on Computational Intelligence and Games, 2007, 24–31. - Alex Fink and Richard Guy,
*The number-pad game*, Coll. Math. J.**38**(2007), 260–264. - Alex Fink,
*A generalization of an IMO problem*, Integers, Electronic Journal of Combinatorial Number Theory**6**(2006), #A17. - Alex Fink and Bill Sands,
*Rationals whose sum equals the reciprocal of their product*, Crux Math.**30**(2004), 292–295.

- with Jeffrey Giansiracusa and Noah Giansiracusa,
**Doctoral thesis**- My thesis was titled
*Matroid polytope subdivisions and valuations*. Aside from an introduction all its content appears in the papers above. **Expository writing, manuscripts**-
- Alex Fink and Richard Guy,
*Rick's Tricky Six Puzzle: S*, Math. Magazine_{5}sits specially in S_{6}**82**no. 2 (April, 2009). See also Doug Ensley's interactive supplement with implementations of the puzzle. *If two were three, what would Hex be?*, 2008, for Gathering for Gardner 8. See also my other page on this game, with an implementation.*Patulous pegboard polygons*, with Derek Kisman and Richard Guy, 2006, for Gathering for Gardner 7, in*Mathematical wizardry for a Gardner*, AK Peters, 2009.

- Alex Fink and Richard Guy,