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1d
comment Rationality and triangles
Found it! math.stackexchange.com/questions/1115813/triple-angle-condition
1d
comment Rationality and triangles
Sorry, I don't remember what letter was used for the variable; just that the question asked for minimizing the perimeter of an integer triangle with one angle 3 times another.
1d
answered Convert 1-5 Grading Scale to 1-100 Grading System
1d
comment Convert 1-5 Grading Scale to 1-100 Grading System
Posted to (but closed on) MO, mathoverflow.net/questions/195145/…
1d
revised Convert 1-5 Grading Scale to 1-100 Grading System
edited tags
1d
comment Rationality and triangles
No, I tried to find it but failed.
1d
comment When using the square method , how do you know what level equation you are working with?
What is "the square method"? What do you mean by the "level" of an equation? "Algebraic Geometry" is usually a graduate-level mathematical topic --- is this really a question about Algebraic Geometry?
1d
comment Rationality and triangles
Didn't we just have this problem a couple of days ago, but with $a,3a,180-4a$?
1d
comment Can anyone solve this without substitution
Are you still here?
1d
comment splitting fields $X^4-2,X^4+2X^2-2$
Any thoughts about my comments?
1d
comment Unique perpendicular line
If you want to be sure I see a comment directed to me, you have to put an at-sign before my name. If you keep all the postulates of Euclidean geometry except the 5th postulate, you get Lobachevskian geometry. There is another geometry, spherical geometry, that resembles both Euclidean and Lobachevskian, but it differs in more than just the 5th postulate. So go look up spherical geometry, find out where exactly its postulates differ from Euclidean and Lobachevskian, and then you know what's going to be important in your proof.
2d
comment Legendre's Chi- Function
OK, so it's sort of like the dilogarithm function. Maybe there's some literature on calculating dilogarithms that would help.
2d
comment On a congruence for the number of finite topologies
A good library can get you that article on interlibrary loan.
2d
comment Is it possible to uniquely number faces of a hexagonal grid with consecutive numbers?
@oxi, you have people? I'm not sure I have any insights. I tried stuff, it didn't work, so I tried stuff that didn't have the flaws of the first stuff I tried, it still didn't work, etc., etc., until it worked (or seems to have worked, pending verification by your people).
2d
comment Decrypting an Affine Cipher with Modulus
You wanted $7^{-1}\bmod{26}$, which means you wanted $q$ such that $7q\equiv1\bmod{26}$, and as you now undeerstand, $q=15$ works in that congruence. So the only question I still have for you is, do you know how to come up with that 15?
2d
comment Decrypting an Affine Cipher with Modulus
$7\times15=104$? $4\times26=105$?? 15 equals 1 mod 26??? 7 equals 1 mod 26????
2d
comment Representing commuting operators as functions of a third operator.
Are you still here?
2d
comment On a congruence for the number of finite topologies
So, have you followed up on my suggestions?
2d
comment Legendre's Chi- Function
Are you still there?
2d
comment Question about normal subgroups and cosets
Any takers? Anyone want to post the KCd comment as an answer? @Meelo? OP?