Why is $k$ taken as 1 in the derivation of $F=kma$?
1394
How do we know that $F = ma$, not $F = k \cdot ma$
38127
Equivalence between Kähler condition and $\partial_kg_{i\bar j} = \partial_ ig_{k\bar j}$
69854
Why is there a minus sign in this wave equation derivation?
82448
Why is $f(x) = x\phi(x)$ one-to-one?
153226
Proof of $\sum_{k = 1}^{n} \frac{1}{k^{2}} < 2 - \frac{1}{n}$
73829
Coulomb's Law: why is $k = \dfrac{1}{4\pi\epsilon_0}$
69943
why is ${n+1\choose k} = {n\choose k} + {n\choose k-1}$?
94469
How to prove that $|HK| = \dfrac{|H| \; |K|}{|H \cap K|}$?
9753
How to solve the equation $\phi(n) = k$?
107397
Algebraic proof for the identity $\sum_{k=0}^m(-1)^{m-k}{{n \choose {k}}}= {{n-1}\choose m}$
94869
Show that $ \int_{k}^{2} \frac{1}{f(y)} =1$
120235
Clarification of the notation $f: \mathbb{R} \setminus\{3\} \to\mathbb{R}\setminus\{2\}$
147528
Where's the error in this $2=1$ fake proof?
135713
What does "$(-1/2)_k$" mean in this expression related to incomplete elliptic integrals?
15793
Is the formula $(\text{ker }A)^\perp=\text{im }A^T$ necessarily true?
78561
Algebraic field extensions: Why $k(\alpha)=k[\alpha]$.
104828
Show that $\cot \frac{\pi}{2m}\cot \frac{2\pi}{2m}\cot \frac{3\pi}{2m}...\cot \frac{(m-1)\pi}{2m}=1$