Browsing Mathematics  Ph.D. / Sc.D. by Title
Now showing items 524 of 746

An a priori inequality for the signature operator.
(Massachusetts Institute of Technology, 1978) 
Ainfinity algebras for Lagrangians via polyfold theory for Morse trees with holomorphic disks
(Massachusetts Institute of Technology, 2015)For a Lagrangian submanifold, we define a moduli space of trees of holomorphic disk maps with Morse flow lines as edges, and construct an ambient space around it which we call the quotient space of disk trees. We show that ... 
Abelian algebras and adjoint orbits
(Massachusetts Institute of Technology, 1981) 
Active flows and networks
(Massachusetts Institute of Technology, 2018)Coherent, large scale dynamics in many nonequilibrium physical, biological, or information transport networks are driven by smallscale local energy input. In the first part of this thesis, we introduce and explore two ... 
Adnilpotent ideals of complex and real reductive groups
(Massachusetts Institute of Technology, 2007)In this thesis, we study adnilpotent ideals and its relations with nilpotent orbits, affine Weyl groups, sign types and hyperplane arrangements. This thesis is divided into three parts. The first and second parts deal ... 
Adaptive protocols for the quantum depolarizing channel
(Massachusetts Institute of Technology, 2007)In the first part, we present a family of entanglement purification protocols that generalize four previous methods, namely the recurrence method, the modified recurrence method, and the two methods proposed by ManevaSmolin ... 
Adiabatic limit and SzegÅ‘ projections
(Massachusetts Institute of Technology, 2003) 
Admissible nilpotent coadjoint orbits of padic reductive Lie groups
(Massachusetts Institute of Technology, 1998) 
Admissible ordinals and recursion theory,
(Massachusetts Institute of Technology, 1971) 
Affine quantum algebras, Weyl groups and constructible functions
(Massachusetts Institute of Technology, 2002)This thesis consists of two parts. In the first part we study the affine quantum group of type A, giving a geometric description of its natural inner product, and studying the theory of cells attached to the canonical ... 
The affine Yangian of gl₁, and the infinitesimal Cherednik algebras
(Massachusetts Institute of Technology, 2014)In the first part of this thesis, we obtain some new results about infinitesimal Cherednik algebras. They have been introduced by EtingofGanGinzburg in [EGG] as appropriate analogues of the classical Cherednik algebras, ... 
An algebra for theoretical genetics
(Massachusetts Institute of Technology, 1940) 
Algebraic and combinatorial properties of minimal border strip tableaux
(Massachusetts Institute of Technology, 2003)Motivated by results and conjectures of Stanley concerning minimal border strip tableaux of partitions, we present three results. First we generalize the rank of a partition [lambda] to the rank of a shifted partition ... 
An algebraic approach to the operator product expansion
(Massachusetts Institute of Technology, 2000) 
Algebraic combinatorics of graph spectra, subspace arrangements and Tutte polynomials
(Massachusetts Institute of Technology, 1996) 
Algebraic combinatorics of hyperplane arrangements
(Massachusetts Institute of Technology, 1987) 
Algebraic geometry and representation theory in the Verlinde category
(Massachusetts Institute of Technology, 2019)This thesis studies algebraic geometry and the representation theory of group schemes in the setting of symmetric tensor categories over algebraically closed fields of positive characteristic. A specific focus is paid to ... 
Algorithmic approaches to graph states under the action of local Clifford groups
(Massachusetts Institute of Technology, 2007)Graph states are quantum states (quantum codes) in qndimensional space ... (q being a power of some prime number) which can be described by graphs with edges labeled from the field of order q, Fq. Graph states are determined ... 
Algorithms for genomics and genetics : compressionaccelerated search and admixture analysis
(Massachusetts Institute of Technology, 2013)Rapid advances in nextgeneration sequencing technologies are revolutionizing genomics, with data sets at the scale of thousands of human genomes fast becoming the norm. These technological leaps promise to enable corresponding ... 
Analogues of Kähler geometry on Sasakian manifolds
(Massachusetts Institute of Technology, 2008)A Sasakian manifold S is equipped with a unitlength, Killing vector field ( which generates a onedimensional foliation with a transverse Kihler structure. A differential form a on S is called basic with respect to the ...