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22h
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?
Jul
21
comment How to notate all integers $\gt 1$ except products of $2, 3 , 5$?
I'm using "except products" and "not a product" there but you might be right. I hope my sequence sample clarifies it better. Gonna prefer numbers over words in future :)
Jul
21
revised How to notate all integers $\gt 1$ except products of $2, 3 , 5$?
Added sequence
Jul
21
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