Synthetic proof of the equation of hyperbola
137283
Is there geometric proof for the equation of hyperbola using only constant distance from two foci definition?
49984
Valid justification for algebraic manipulation of $\mathrm{d}y/\mathrm{d}x$?
129946
Synthetic division of polynomials by factor of the form $(ax+b)$
23414
Topologist's Sine Curve: A rigorous proof of why $\overline{S} = S \cup V$
76892
Factoring inequalities on Double Summation (Donald Knuth's Concrete Mathematics)
35313
Proof of Euclid's Lemma
144713
Simple Calculus Proof
142122
Finding equation of the parabola from tangent information
102307
Discrete Math Proofs Involving Real Numbers
145388
Structural Induction: Metalogic Proof
145447
bilinear form - proof
100759
Extending exponentiation to reals
111930
Domain of a Standard Parabola
84317
Iterated self-composition of arbitrary function
12949
Inductive Proof of Euler's Formula $v-e+r=2$
71975
Showing that an Isometry on the Euclidean Plane fixing the origin is Linear
141643
Showing $\rho (x,y)=\frac{d(x,y)}{1+d(x,y)}$ is a metric