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  • 8 votes cast
Aug
1
accepted Doubling sequences of the cyclic decimal parts of the fraction numbers
Jul
29
comment Doubling sequences of the cyclic decimal parts of the fraction numbers
Very throughout answer to the doubling and n-tupling phenomenon. I hope other people interested of the topic will be satisfied with it now. I learned a lot! I also made small corrections to few numbers there which were probably copy and paste typos.
Jul
29
suggested rejected edit on Doubling sequences of the cyclic decimal parts of the fraction numbers
Jul
28
comment Doubling sequences of the cyclic decimal parts of the fraction numbers
Could we summarize at the end something like doubling is consequence of the n power 2 multifier on the equation? Any simole rule or notation to show when it happen? Just to conclude original question. Btw. 1/98 × 2 = 1/49 and 1/49 × 7 = 1/7. So 2×7 the beginning of the sequence is seen here as well.
Jul
25
accepted Four mathematical notations for fraction $1/999$ and how to show/present they are equal
Jul
25
comment Four mathematical notations for fraction $1/999$ and how to show/present they are equal
Brilliant, that is more than enough for OP. I'm looking forward answer for other wider "doubling sequences" topic. At first I didn't want to mix it with the current one, but true, that is what I'm after.
Jul
25
accepted How to notate all integers $\gt 1$ except products of $2, 3 , 5$?
Jul
25
comment Four mathematical notations for fraction $1/999$ and how to show/present they are equal
I will add it. Is it possible to show by which principle you get sigma sign out of the equation on part d?
Jul
24
comment How to notate all integers $\gt 1$ except products of $2, 3 , 5$?
30 could be explained by 2*3*5 so it would be in direct visual sync with the question. I guess you can get a set of similar: gcd(n,34)=1 for all numbers that doesn't divide with 2 and 17?
Jul
24
comment Four mathematical notations for fraction $1/999$ and how to show/present they are equal
hope you have time to read and comment at least the last part of this: stackedit.io/…
Jul
24
comment Four mathematical notations for fraction $1/999$ and how to show/present they are equal
@Syuizen can you show me, what do you mean with finding limits for parts a,b,c,d?
Jul
24
comment Four mathematical notations for fraction $1/999$ and how to show/present they are equal
Do you have time for a little chat about your answer? I remember on some SE site it was possible to have a conversation screen, but I can't see it here...
Jul
23
revised Four mathematical notations for fraction $1/999$ and how to show/present they are equal
added 10 characters in body
Jul
23
revised Four mathematical notations for fraction $1/999$ and how to show/present they are equal
deleted 6 characters in body
Jul
23
comment Four mathematical notations for fraction $1/999$ and how to show/present they are equal
Yes, exactly. I wish there was an easy reading and searchable guide for notation. But now I can read from source.
Jul
23
asked Four mathematical notations for fraction $1/999$ and how to show/present they are equal
Jul
22
comment Are there more convenient ways of getting the number of digits of a positive integer?
Convincing enough!
Jul
22
accepted Are there more convenient ways of getting the number of digits of a positive integer?
Jul
22
comment How to notate all integers $\gt 1$ except products of $2, 3 , 5$?
Is "not 5-smooth" same as 7-rough?
Jul
22
asked Are there more convenient ways of getting the number of digits of a positive integer?