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visits member for 3 years, 11 months
seen 5 mins ago

May
27
asked Identify functions by their graphics
May
27
comment What makes elementary functions elementary?
|x| is not an elementary function.
May
17
answered What makes elementary functions elementary?
Apr
28
asked Is it possible to extend the complex plane affinely and projectively at the same time?
Apr
18
comment Maximum among $1, 2^{1/2}, 3^{1/3}, 4^{1/4},…$
what do you mean by "greatest absolute value from"?
Apr
18
comment Maximum among $1, 2^{1/2}, 3^{1/3}, 4^{1/4},…$
The closest number is not necessary the greater.
Apr
18
awarded  Excavator
Apr
18
comment Whats an extended complex plane?
@Daniel Fischer mathworld.wolfram.com/ExtendedComplexPlane.html
Apr
18
asked How the extension of complex plane with complex infinity $\tilde{\infty}$ coexists with extension of real line with positive infinity $\infty$?
Apr
18
revised Whats an extended complex plane?
complex infinity is denoted with tilde usually to distinguish from positive infuinity
Apr
18
suggested suggested edit on Whats an extended complex plane?
Apr
17
comment Is the theory of dual numbers strong enough to develop real analysis, and does it resemble Newton's historical method for doing calculus?
@Mike Battaglia maybe it causes problems with distributiveness of multiplication? $0/0=\epsilon^2 \omega^2=(\epsilon\omega)(\epsilon\omega)=1$.
Apr
15
comment Where to find reference about dealing with operators in form of formal power series?
@Michael Hardy in $(D/D)f$ do you mean multiplication or application of operator? I used square brackets to indicate application of operator to a function.
Mar
24
revised Is there a special name for pi-based finite difference?
added 9 characters in body
Mar
24
comment Is there a special name for pi-based finite difference?
@nik no, check yourself. Pi is the period of tangent.
Mar
24
revised Is there a special name for pi-based finite difference?
added 6 characters in body
Mar
24
revised Is there a special name for pi-based finite difference?
edited body
Mar
24
revised Is there a special name for pi-based finite difference?
added 45 characters in body
Mar
24
asked Is there a special name for pi-based finite difference?
Mar
24
comment How to define the $0^0$?
The second premise is wrong.