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Combinatorial Interpretation of Power Sum Polynomials and Various Divisibility Properties

Göksu, D., Üstündağ, D. (2025)

We describe a framework for giving a combinatorial interpretation to some well-known results involving the power sum polynomials. We use some set-theoretic principles, such as the inclusion-exclusion principle and the image factorization of functions, to derive results about polynomials with rational coefficients that had previously been discovered by purely arithmetic or algebraic means. With this, we give a characterization for the divisibility of a polynomial by a binomial coefficient. Also, for any positive odd number $n$ and natural numbers $a, b$, we prove that $a^n + b^n$ is divisible by $a+b$ through combinatorial means. We then computationally examine when a power sum is divisible by the sum of cubes.

Notes

Expository Note

A Short Exposition on Formalization and Application of Support Vector Machines and a Paper on Residual Learning

Üstündağ, D. (2026)
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Lecture Notes

Extremal Graph Theory Via Two Geometry Questions

Göral, H. (2025)
Edited by Doruk Üstündağ
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Small Digression on Low Rank Adaptation I

Üstündağ, D. (2026)
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