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22h
reviewed Approve basic concept about edge graphs (line graphs)
22h
reviewed Approve Counting and solving bijection
1d
answered What is this type of function called? How can I translate it to a different origin?
2d
reviewed Edit Finding work done by a force
2d
revised Finding work done by a force
Latex, tags edit
2d
revised What is the millionth decimal digit of the $ 10^{10^{10^{10}}} $-th prime?
remove obsolete remarks
2d
revised What is the millionth decimal digit of the $ 10^{10^{10^{10}}} $-th prime?
delete mention of outdated record prime
2d
awarded  Popular Question
Apr
17
comment If $4=5$, then $6=8\,$ (yes or no?)
Note that bullet $3$ also establishes that you are the Pope: The Pope and you are two people. Since $2=1$, then the Pope and you are one. Hence you are the Pope.
Apr
17
comment If $4=5$, then $6=8\,$ (yes or no?)
If $4=5$, then $\forall n\ \big{(} n = (5-4)n = (4-4)n= 0n=0\big{)}$. So, if $4=5$, then all numbers are equal to $0$ and hence are equal to one another.
Apr
16
reviewed Edit Cubic Equation. (Factorisation)
Apr
16
revised Cubic Equation. (Factorisation)
Factorization depends on what field we are considering thats why tag of 'Real Numbers' is added.
Apr
16
reviewed Edit How to convert this NFA to DFA?
Apr
16
revised How to convert this NFA to DFA?
external link to internal
Apr
14
comment Evaluate this finite product
Presumably, this is related to his previous question involving $\prod_{n=0}^{99}\left(2n+1\right)$ .
Apr
13
revised A big “smallest” number
for greater clarity, express it symbolically
Apr
13
comment A big “smallest” number
@HagenvonEitzen - No, the OP means that if $N$ has decimal expansion $abc...xyz$, then $9N$ has decimal expansion $zabc...xy$. (I think this way of putting it is clearer than the wording used so far.)
Apr
1
comment Maximum number of points you can put on grid $ n\times m$ with no equidistant?
Your closing sentence naturally leads to the question: What is the least $n$ such that in an $n\times n$ grid, there is no set of $n$ points among which all point-to-point distances are distinct?
Apr
1
comment Maximum number of points you can put on grid $ n\times m$ with no equidistant?
OK, I must have overlooked something -- would you mind posting any one of those $5\times 4$ solutions? (Sorry, before I saw your reply I edited out my comment about Taxicab geometry as a variant.)
Apr
1
comment Maximum number of points you can put on grid $ n\times m$ with no equidistant?
Perhaps I'm miscounting, but in a 5×5 grid I can't seem to find 5 points such that no two pairs of them are equidistant -- contrary to your intuition about Question 2 in case m=n. (?)