14 citations · 39 across the 29 of their papers we have counts for
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A Canonical Form for Positive Definite Matrices
Mathieu Dutour Sikirić, Anna Haensch, John Voight +1
We exhibit an explicit, deterministic algorithm for finding a canonical form for a positive definite matrix under unimodular integral transformations. We use characteristic sets of…
Classification of one-class spinor genera for quaternary quadratic forms
A. G. Earnest, Anna Haensch
A quadratic form has a one-class spinor genus if its spinor genus consists of a single equivalence class. In this paper, we determine that there is only one primitive quaternary ge…
Completeness of the list of spinor regular ternary quadratic forms
A. G. Earnest, Anna Haensch
Extending the notion of regularity introduced by Dickson in 1939, a positive definite ternary integral quadratic form is said to be spinor regular if it represents all the positive…
Almost universal ternary sums of polygonal numbers
Anna Haensch, Ben Kane
For a natural number , generalized -gonal numbers are those numbers of the form with . In this paper we establish condition…
A Characterization of almost universal ternary inhomogeneous quadratic polynomials with conductor 2
Anna Haensch
An integral quadratic polynomial (with positive definite quadratic part) is called almost universal if it represents all but finitely many positive integers. In this paper, we prov…
A characterization of almost universal ternary quadratic polynomials with odd prime power conductor
Anna Haensch
An integral quadratic polynomial (with positive definite quadratic part) is called almost universal if it represents all but finitely many positive integers. In this paper, we intr…
Ternary Sums of Squares and Triangular Numbers
Wai Kiu Chan, Anna Haensch
For any integer , let denote the triangular number . In this paper we give a complete characterization of all the triples of positive integers $(α, β, γ)…
Primitive prime divisors in zero orbits of polynomials
Kevin Doerksen, Anna Haensch
Let be a sequence of integers. A primitive prime divisor of a term is a prime which divides but does not divide any of the previous terms of t…