On the complexity of integer matrix multiplication
On the complexity of integer matrix multiplication
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关于整数矩阵乘法的复杂度
DOI:
10.1016/j.jsc.2017.11.001
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
J. Hoeven
中科院分区:
文献类型:
--
作者:
David Harvey;J. Hoeven
Let M (n) denote the bit complexity of multiplying n-bit integers, let ω∈(2, 3] be an exponent for matrix multiplication, and let lg⁎ n be the iterated logarithm. Assuming that log d= O (n) and that M (n)/(n log n) is increasing, we prove that d× d matrices with n-bit integer entries may be multiplied in O (d 2 M (n)+ d ω n 2 O (lg⁎ n− lg⁎ d) M (lg d)/lg d) bit operations. In particular, if n is large compared to d, say d= O (log n), then the complexity is only O (d 2 M (n)).