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New Mexico State University
NMSU Mathematics Graduate Student Organization
Graduate Students Seminar (GSS) Presenters
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Categories.
  • Presenter: Preston S. Keith
  • Date/Time: October 31, 2011, 3:30p.m.
  • Location: SH 250
  • Description: Categories will be defined, and the definitions of functor and natural transformation will be given, leading to a discussion of what it means for categories to be equivalent. A brief mention of Lawvere's ETAC will be made.
Gate implementation of binary addition using symbolic logic and logic circuits.

  • Presenter: Ahmed Benkhalti
  • Date/Time: October 17, 2011, 3:30p.m.
  • Location: SH 250
  • Description: The basics of compund statements, logical equivalence, and logic gates, and how binary addition is applied to displaying digital numbers.
On the use of stable isotope analysis in mammalian ecology.
  • Presenter: Ricardo Chavez
  • Date/Time: October 10, 2011, 3:30 p.m.
  • Location: SH 250
  • Description: Rick will present a meta-analysis he performed that offers reason to abandon a critical assumption that is held in stable isotope ecology.
Bottleneck just-in-time sequencing for mixed-model production systems.

  • Presenter: Chudamani Poudyal
  • Date/Time: October 3, 2011, 3:30 p.m.
  • Location: SH 250
  • Description: N/A

A preacher, a rabbi, and old measuring tools: a look at the use of the diagonal scale and gunter's chain in English geometry texts from 1746 to 1984.
  • Presenter: Kristina Leifeste
  • Date/Time: September 26, 2011, 3:30 p.m.
  • Location: SH 252
  • Description: The diagonal scale, whose origins are credited to Rabbi Levi Ben Gershon (1288-1344), is a 2-dimensional scale, drawn on a flat surface, used to measure short lengths up to a precision of three figures, much as we use a caliper today. Gunter's chain, invented by English clergymen Edmund Gunter (1581-1626), was a 22-yard long metal chain used for surveying large areas of land. While the diagonal scale is still seen today in architecture and drafting books, Gunter's chain is no longer used. However, both tools were presented in early practical geometry texts. This talk will cover the history and descriptions of both tools, their uses, and their prevalence in English and American  geometry texts beginning from (at least) 1746 (Stewart) through 1984 (Earle). Using these texts, we are able to chronicle the appearance of these instruments, presented both separately and together, and to show how they were used to solve geometry problems in practical ways.

Spring Break
  • Presenter: N/A
  • Date/Time: March 21, 2011, 4:00 p.m.
  • Location: SH 252
  • Description: N/A


Some computations on knot groups.
  • Presenter: Mauricio Lopez-Hernandez
  • Date/Time: March 14, 2011, 4:00 p.m.
  • Location: SH 252
  • Description: A brief presentation of the Writinger Presentation and some computations on them.


Every commutative ring with finitely many zero divisors is finite
  • Presenter: Dave Hren
  • Date/Time: March 7, 2011, 4:00 p.m.
  • Location: SH 252
  • Description: I'll present a paper of Ganesan that gives some properties of rings with finitely many nonzero zero divisors.


Properties of Cell Complexes, Continued
  • Presenter: L. Diaz
  • Date/Time: February 28, 2011, 4:00 p.m.
  • Location: SH 252
  • Description: Useful, but rarely mentioned properties of cell complexes.


Properties of Cell Complexes, Continued
  • Presenter: L. Diaz
  • Date/Time: February 21, 2011, 4:00 p.m.
  • Location: SH 252
  • Description: Useful, but rarely mentioned properties of cell complexes.




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