JMLA NOTES: Research submission categories

Research submission categories.

Notes and Exercises on ∞-categories

These notes are designed to accompany the lectures given by the author in the Geometric Langlands Seminar at the University of Chicago in the autumn quarter of 2007. The goal of the lectures was to give a brief introduction to J. Lurie’s work on ∞-categories. In the notes we provide some additional background from category theory and homotopy theory, as well as an extensive collection of exerci...

Notes on Cotorsion Theories and Model Categories

These are notes for two talks given by Mark Hovey at the Summer School on the Interactions between Homotopy Theory and Algebra at the University of Chicago, July 26 to August 6, 2004. Because they are notes, they are a bit more chatty and a bit more likely to contain errors than a paper would be, so caveat lector. They are based on the papers [Hov02], [Gil04b], and [Gil04a], and concern the rel...

Fiber - Optic Sensing of Linear Thermal Expansion (RESEARCH NOTES)

The use of a LED fiber-optic sensor to measure displacement and linear thermal expansion is described. It has a sensitivity of about 0.6 mV/mm, a resolution of 1.25 mm, and a dynamic rang of 400 mm for displacement measurements. For thermal expansion, it shows a sensitivity of about 3.5 mV/C, and the experimental linear expansion values are in agreement with those calculated. The reported senso...

Tomographic Determination of Temperature Distribution in Billets (RESEARCH NOTES)

The principles of Ultrasonic Computed Tomography (UCT) are reviewed in this paper. The UCT is a powerful nondestructive technique in medicine and recently in industry to reveal an image of a slice of an object or body. The advantage of UCT over other conventional techniques in imaging is that a computed tomogram yields quantitative information about the section of interest. Experimental works o...