On a generalization of smooth and symmetric functions
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N. C. Manna (1971)
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P. Kostyrko (1972)
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N. K. Kundu (1974)
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N. K. Kundu (1973)
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Jiří Matoušek (1989)
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Michael J. Evans (1987)
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Michael J. Evans (1974)
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Jaskuła, Janusz, Szkopińska, Bożena (2015-12-15T14:49:03Z)
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Gang Yu (2005)
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A positive integer n is called E-symmetric if there exists a positive integer m such that |m-n| = (ϕ(m),ϕ(n)), and n is called E-asymmetric if it is not E-symmetric. We show that there are infinitely many E-symmetric and E-asymmetric primes.
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Dornstetter, J.L., Krob, D., Thibon, J.Y., Vassilieva, E.A. (2002)
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Jiří Rohn (1994)
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It is proved that checking positive definiteness, stability or nonsingularity of all [symmetric] matrices contained in a symmetric interval matrix is NP-hard.
Gerd Herzog, Roland Lemmert (2005)
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We apply Max Müller's Theorem to second order equations u'' = f(t,u,u') to obtain solutions between given functions v,w.
Boris Bukh (2008)
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Sam Colvin, Lokenath Debnath (1973)
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