Möbius function: Difference between revisions
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Explanation: _ q: n gives the list of exponents of prime factors of n. (This is an empty list for 1, is 2 0 2 for the number 100 and is 3 1 1 for the number 120.) |
Explanation: _ q: n gives the list of exponents of prime factors of n. (This is an empty list for 1, is 2 0 2 for the number 100 and is 3 1 1 for the number 120.) |
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In this context +/ is the sum of that list, 2 | +/ is 1 if the sum is odd and 0 if the sum is even. _1^0 is 1 and _1^1 is _1 |
In this context +/ is the sum of that list, 2 | +/ is 1 if the sum is odd and 0 if the sum is even. _1^0 is 1 and _1^1 is _1. And, {{*/1-y>:2}} returns zero if any exponent is at least 2 in magnitude. |
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Task example: |
Task example: |
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