It is proved that every Boolean function in n variables of aconstant degree d, where d n=2, n is even, can be represented as thesum of constant number of bent functions in n variables. It is shown thatany cubic Boolean function in 8 variables is the sum of not more than 4bent functions in 8 variables.
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机译：证明了n个常数为d的n个变量中的每个布尔函数，其中d n = 2，n为偶数，可以表示为n个变量中不变数量的弯曲函数之和。结果表明，8个变量中的任何三次布尔函数都是8个变量中不超过4bent函数的和。
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