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visits member for 2 years, 9 months
seen Oct 27 '13 at 11:34

Student


Sep
23
asked Where do we make use of the concept of “Power set of a set containing an empty set”?
Mar
16
accepted Consistent but apparently unsolvable system of equations
Mar
16
comment Consistent but apparently unsolvable system of equations
Thanks. I think your edit provided the necessary clarification.
Mar
16
comment Consistent but apparently unsolvable system of equations
Ah, makes sense. The text talked about infinite number of solutions for a system, but had presented no example and I was wondering how such a system would look like. Specifically, in this case, the infinite number of solutions is only when $h = 12$ right? The system has a unique solution if $h \neq 12$.
Mar
16
revised Consistent but apparently unsolvable system of equations
fixed typo
Mar
16
asked Consistent but apparently unsolvable system of equations
Jan
5
accepted Solving linear homogenuous recurrence relation
Jan
4
revised Solving linear homogenuous recurrence relation
added 150 characters in body
Jan
4
comment Solving linear homogenuous recurrence relation
I meant to ask why does the author add the two individual solutions($c_12^n$ and $c_2(-3)^n$). Aren't they solutions to the recurrence relations by themselves?
Jan
4
asked Solving linear homogenuous recurrence relation
Dec
19
accepted Clarifications about the definition of algebraic systems and algebraic structures
Dec
19
comment Clarifications about the definition of algebraic systems and algebraic structures
@ZhenLin, I've added the exact definitions.
Dec
19
awarded  Editor
Dec
19
revised Clarifications about the definition of algebraic systems and algebraic structures
added clarification
Dec
19
comment Clarifications about the definition of algebraic systems and algebraic structures
@AlexanderGruber, Thanks. I had recently learned about relations and partial orders in particular and was subconsciously expecting the 'structure' to do something similar to imposing an order on the elements of the set. I could not visualize 'structure' as something other than an order until I read the third paragraph of your answer. My question seems so silly now. Also would you consider maybe editing your answer to remove the 1st, 4th and 5th paragraphs before I accept it. I felt that they were not directly relevant to my question.
Dec
19
comment Clarifications about the definition of algebraic systems and algebraic structures
@AlexanderGruber, So is it correct of me to say that a set of an algebraic structure is different from an ordinary set in that its axioms differentiate certain elements(identity and inverses in groups) and sets rules about how operators behave(closure and associativity in groups)? This differentiation and behaviour specification is what is alluded to by "structure"?
Dec
19
asked Clarifications about the definition of algebraic systems and algebraic structures
Nov
20
accepted Which of the following is a valid first order formula?
Nov
20
comment Which of the following is a valid first order formula?
Thanks. I wasn't thinking about this from the false-false perspective.
Nov
20
comment Which of the following is a valid first order formula?
@amWhy, That's right. Thanks.