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Browsing Theses  Mathematics by Title

Robinson, Hugh Michael, 1978
(Massachusetts Institute of Technology, 2005)
The category of Segal spaces was proposed by Charles Rezk in 2000 as a suitable candidate for a model category for homotopy theories. We show that Quillen functors induce morphisms in this category and that the morphisms ...

Bradley, Philip H. (Philip Harlan), 1973
(Massachusetts Institute of Technology, 2001)
In this thesis, two algorithms for protein structural motif recognition are presented. A program is described which successfully recognizes the occurrence of the righthanded parallel 8helix fold from protein sequence ...

Weatherwax, John Lloyd, 1973
(Massachusetts Institute of Technology, 2001)
Recently Bruno and Vaynblat introduced a new mathematical model to describe shock induced martensitic phase transitions. This model is much simpler than prior ones  requiring, essentially, no quantities that cannot be ...

Sachs, Jeffrey R. (Jeffrey Robin)
(Massachusetts Institute of Technology, 1987)

Worsley, Beatrice Helen
(Massachusetts Institute of Technology, 1947)

Laning, J. Halcombe
(Massachusetts Institute of Technology, 1947)

Chiu, Jiawei
(Massachusetts Institute of Technology, 2013)
In this thesis, we present three different randomized algorithms that help to solve matrices, compute low rank approximations and perform the Fast Fourier Transform. Matrix probing and its conditioning When a matrix A with ...

Borkovitz, Debra Kay
(Massachusetts Institute of Technology, 1992)

Møller, Niels Martin
(Massachusetts Institute of Technology, 2012)
This doctoral dissertation is on the theory of Minimal Surfaces and of singularities in Mean Curvature Flow, for smooth submanifolds Y" in an ambient Riemannian (n+ 1)manifold Nn+1, including: (1) New asymptotically conical ...

Chow, Kwok Wing
(Massachusetts Institute of Technology, 1986)

Persson, PerOlof, 1973
(Massachusetts Institute of Technology, 2005)
We present new techniques for generation of unstructured meshes for geometries specified by implicit functions. An initial mesh is iteratively improved by solving for a force equilibrium in the element edges, and the ...

Kuc̆an, Jakov
(Massachusetts Institute of Technology, 1997)

Kahr, Andrew Seth
(Massachusetts Institute of Technology, 1962)

Croitoru, Dorian (Dorian Eugen)
(Massachusetts Institute of Technology, 2010)
This thesis consists of two parts. In the first part, we start by investigating the classical permutohedra as Minkowski sums of the hypersimplices. Their volumes can be expressed as polynomials whose coefficients  the ...

He, Li, 1977
(Massachusetts Institute of Technology, 2001)
Solar activity, as indexed by sunspots, has a cycle of length varying from about 9 to 13 years. Statisticians have fitted several models to predict sunspot numbers one year ahead. We instead focus on predicting the magnitudes ...

Liang, Xiangdong, Ph. D. Massachusetts Institute of Technology
(Massachusetts Institute of Technology, 2013)
Capillary instability (PlateauRayleigh instability) has been playing an important role in experimental work such as multimaterial fiber drawing and multilayer particle fabrication. Motivated by complex multifluid geometries ...

Huang, Jennifer, 1973
(Massachusetts Institute of Technology, 1996)

Chen, Yong, 1979
(Massachusetts Institute of Technology, 1999)

Li, JingRebecca, 1973
(Massachusetts Institute of Technology, 2000)

Chan, Alice Shih Ying
(Massachusetts Institute of Technology, 2006)
The Scott rank of a countable structure A, denoted sr(A), was observed by Nadel to be at most wA + 1, where wA4 is the least ordinal not recursive in A. Let T be weakly scattered and L(a,T) be E2admissible. We give a ...