Thank you very much. I like the equation over time. Your explanation is difficult to follow when you do distributivity of % over +. I mean when you move from

Thank you very much. I like the equation over time. Your explanation is difficult to follow when you do distributivity of % over +. I mean when you move from (i + t) % n = (j + 2t) % n to (i % n) + (t % n) = (j % n) + (2t % n) Here I read the '=' as normal number equality. A simplified example to demostrate that distributivity is not valid here: (5 + x) % 3 = 4 5 % 3 + x % 3 = 4 In the second line x=5 is a solution. But in the first line x is not a solution. It's better to express your explanation using "= (mod n)" from the beginning. (i + t) % n = (j + 2t) % n i + t = j + 2t (mod n)