1,019 reputation
1616
bio website vivatropolis.org/istvan
location Cambridge, United States
age 17
visits member for 2 years, 4 months
seen 20 hours ago

hacking around


Oct
2
awarded  Quorum
Sep
1
comment What could be better than base 10?
Doesn't that imply that you need a potentially unbounded number of symbols to represent large numbers? If a number requires $n$ factorial digits, then you need $n$ symbols to represent the most significant digit. In a classic base $B$, you only ever need $B$ symbols.
Aug
31
revised Solving a logarithmic expression without a calculator
clarified log base
Aug
31
suggested suggested edit on Solving a logarithmic expression without a calculator
Aug
28
comment What could be better than base 10?
@MJD If you want to use your hands and are allowed to distinguish between fingers on each hand, then binary is clearly optimal, allowing you to count from 0 to 1024 (half-open).
Aug
28
comment What could be better than base 10?
Um... call me dumb, but in what base do you represent each $a_i$, considering that no constant finite base will suffice once $i!$ is greater than it?
Aug
24
revised If there are obvious things, why should we prove them?
fixed grammar, removed gender-specific "man".
Aug
24
suggested suggested edit on If there are obvious things, why should we prove them?
Jun
26
awarded  Custodian
Jun
12
comment Mathematical research of Pokémon
@JairTaylor right- that paper uses some clever Pokémon-engineering to ensure the outcome of each battle beforehand, so it doesn't really go into this :)
Jun
2
awarded  Yearling
May
31
comment Are problems about finding the next term of a sequence mathematical?
"I find succeeding numbers of a sequence mathematical; I understand equations, both the simple and quadratical..." (I initially mis-parsed the title, with "mathematical" modifying "sequence" :)
May
27
reviewed No Action Needed Limit of $\frac{\sin(xy^2)}{x^2+y^2}$ as $x\to0$ and $y\to0$
May
25
comment Is this computation erroneous?
@franklin 100 $\neq \infty$
May
21
revised Write a second order differential equation for which y(t)= 2 cost- t is a solution and verify
improve grammar; TeXify
May
21
reviewed No Action Needed How do I find $f(4)$ when $f(n)= f(n-1)+ 2n$?
May
21
reviewed No Action Needed harmonic function invariant under a rotation
May
21
reviewed Reviewed Write a second order differential equation for which y(t)= 2 cost- t is a solution and verify
May
21
suggested suggested edit on Write a second order differential equation for which y(t)= 2 cost- t is a solution and verify
May
17
comment Limit of the absolute value of a function
Well, $\lim_{x \rightarrow c} |f(x)| = L$ implies that if $\lim_{x \rightarrow c} f(x)$ exists, it is either $L$ or $-L$, no?