Oct
6
revised Logarithms in Calculators?
changed - key to +- key
Oct
6
answered Logarithms in Calculators?
Oct
3
answered Minimum perimeter of a three-sided rectangular fence with given enclosed area
Oct
2
reviewed Approve Show that $(\phi \rightarrow \psi), (\phi \rightarrow \neg \psi) \vdash \neg \phi$
Oct
1
reviewed Approve How would you get to $\tan(\theta/2)$ if you are given $\sin\theta/(1+\cos\theta)$?
Sep
30
reviewed Reject Find the area of the curved shape
Sep
30
awarded  Explainer
Sep
30
comment Is the sum of all natural numbers $-\frac{1}{12}$?
So how does your new definition of convergence looks like? What are the implications of this change? When is this change of the definition useful? I can't see this this.
Sep
30
revised Is the sum of all natural numbers $-\frac{1}{12}$?
latex
Sep
30
reviewed Approve Using function composition, show that $f(x)$ and $f^{-1}(x)$ are inverses of one another.
Sep
30
comment Problems in elementary number theory and methods from physics
-1 It seems to me that this answer is completely off topic. Neither is 2+2 the such a number theoretic topic in the sense of the OP nor does it help to think of a calculater if one wants to make an addition ot two numbers.
Sep
30
comment Problems in elementary number theory and methods from physics
I think it is hard to find application of number theory in physics. Of course its even harder to find applications of number theory in physic that can be solved by "physical" reasoning
Sep
27
comment The Largest Prime Less Than the Square of a Prime
It is listed as A054270. But I can't see that it has been "studied"? I cannot find any reference to a paper there.
Sep
27
reviewed Approve Continuous Linear Operator
Sep
26
awarded  Strunk & White
Sep
26
revised Non-linear diophantine equation
adding diophantine to title
Sep
26
reviewed Approve Is there software I can use to draw this graph?
Sep
26
reviewed Approve Existence of a bounded function satisfying a second order differential equation
Sep
25
comment Arrangement of 5 letter words
Why $26 \cdot 25 \cdot 24 \cdot 25 \cdot 26$?
Sep
24
awarded  Autobiographer