Summary
Some generalizations of the classical Eisenstein and Schönemann Irreducibility Criteria and their applications are described. In particular some extensions of the Ehrenfeucht–Tverberg irreducibility theorem which states that a difference polynomial f(x) – g(y) in two variables is irreducible over a field K provided the degrees of f and g are coprime, are also given. The discussion of irreducibility of polynomials has a long history. The most famous irreducibility criterion for polynomials with coefficients in the ring \(\mathbb{Z}\) of integers proved by Eisenstein [9] in 1850 states as follows: Eisenstein Irreducibility Criterion. Let \(F(x) = a_0x^n + a_1x^{n-1} + \ldots + a_n\) be a polynomial with coefficient in the ring \(\mathbb{Z}\) of integers. Suppose that there exists a prime number p such that a 0 is not divisible by p, a i is divisible by p for \(1 \leq i \leq n,\), and a n is not divisible by p 2, then F(x) is irreducible over the field \(\mathbb{Q}\) of rational numbers.
2010 Mathematics subject classification. 12E05, 12J10, 12J25.
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Bishnoi, A., Khanduja, S.K. (2010). Some Extensions and Applications of the Eisenstein Irreducibility Criterion. In: Colliot-Thélène, JL., Garibaldi, S., Sujatha, R., Suresh, V. (eds) Quadratic Forms, Linear Algebraic Groups, and Cohomology. Developments in Mathematics, vol 18. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6211-9_10
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