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Stange, Katherine E

Professor

Positions

Research Areas research areas

Research

research overview

  • Dr. Stange is especially interested in the relationship between geometry and number theory. She is interested in arithmetic geometry, including elliptic and modular curves, as well as the arithmetic of Kleinian groups, particularly the interplay between algebraic number theory and hyperbolic geometry. Other work focuses on the connections between arithmetic recurrence structures (such as integer sequences defined by a recurrence relation) and geometric objects (such as abelian varieties). She is also active in cryptography, including elliptic curve cryptography and lattice-based post-quantum cryptography. She has wide-ranging interests, including Apollonian circle packings, abelian sandpiles, arithmetic dynamics and game theory. She is also interested in mathematical illustration, visualization and computation.

keywords

  • Number theory, arithmetic geometry, Kleinian groups, elliptic curves, integer sequences, elliptic curve cryptography, lattice-based post-quantum cryptography, Diophantine approximation, arithmetic dynamics, Apollonian circle packings

Publications

selected publications

Teaching

courses taught

  • MATH 2001 - Introduction to Discrete Mathematics
    Primary Instructor - Spring 2018 / Spring 2020 / Fall 2020 / Spring 2023
    Introduces the ideas of rigor and proof through an examination of basic set theory, existential and universal quantifiers, elementary counting, discrete probability, and additional topics. Credit not granted for this course and MATH 2002.
  • MATH 3110 - Introduction to Theory of Numbers
    Primary Instructor - Spring 2019
    Studies the set of integers, focusing on divisibility, congruences, arithmetic functions, sums of squares, quadratic residues and reciprocity, and elementary results on distributions of primes.
  • MATH 4440 - Mathematics of Coding and Cryptography
    Primary Instructor - Fall 2020 / Fall 2022 / Fall 2023 / Fall 2024
    Gives an introduction, with proofs, to the algebra and number theory used in coding and cryptography. Basic problems of coding and cryptography are discussed. Same as MATH 5440.
  • MATH 5440 - Mathematics of Coding and Cryptography
    Primary Instructor - Fall 2020 / Fall 2022 / Fall 2023
    Gives an introduction, with proofs, to the algebra and number theory used in coding and cryptography. Basic problems of coding and cryptography are discussed; prepares students for the more advanced ECEN 5682. Same as MATH 4440.
  • MATH 6110 - Introduction to Number Theory
    Primary Instructor - Fall 2024
    Examines divisibility properties of integers, congruences, diophantine equations, arithmetic functions, quadratic residues, distribution of primes and algebraic number fields. Department enforced prerequisite: MATH 3140. Instructor consent required for undergraduates.
  • ... more

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