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Two classes of permutation polynomials having the form $$(x^{2^m}+x+\delta)^s+x$$. (English) Zbl 1320.11120
Summary: In this paper, we propose two classes of permutation polynomials having the form $$(x^{2^m} + x + \delta)^s + x$$ over the finite field $$\mathbb{F}_{2^{2 m}}$$.

##### MSC:
 11T06 Polynomials over finite fields
##### Keywords:
permutation polynomial; finite field; trace function
Full Text:
##### References:
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