Constructions of (q, k, 1) difference families with q a prime power and k = 4,5
نویسندگان
چکیده
منابع مشابه
A SURFACE OVER Q WITH p g = q = 1 , K 2 = 2 AND MINIMAL PICARD NUMBER
Following an idea of Ishida, we develop polynomial equations for certain unramified double covers of surfaces with pg = q = 1 and K 2 = 2. Our first main result is to show the existence of a surface X with these invariants defined over Q that has the smallest possible Picard number ρ(X) = 2. This is done by giving equations for the double cover X̃ of X, calculating the zeta function of the reduc...
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ژورنال
عنوان ژورنال: Discrete Mathematics
سال: 1995
ISSN: 0012-365X
DOI: 10.1016/0012-365x(94)00198-r