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Maczinga's user avatar
Maczinga's user avatar
Maczinga
  • Member for 7 years, 3 months
  • Last seen more than 2 years ago
12 votes

Meaning of Infinite Union/Intersection of sets

6 votes

Normal Covering of a Space

3 votes
Accepted

Proof of metric

3 votes

Why does $\ker(T) = \{0\} \Leftrightarrow T$ is injective

3 votes

Recurrence Relation: 1, 2, 4, 6, 10, 14, 20, 26, 36, 46

3 votes
Accepted

Is A × (B\C) = (A × B) \ (A × C) Always True For All Sets?

3 votes
Accepted

Unbounded convex real functions

2 votes

The number of values of (x,y)?

2 votes

How to find period of this function?

2 votes

Compute 3^1000 (mod13)

2 votes

How do I show that $\frac{1}{x^{2/x}} \to 1$ as $x\to\infty$?

2 votes
Accepted

How to solve this system of equations ??

2 votes

Find the number of rearrangements of the string 12345 in which none of the sequences 12, 23, 34, 45 occur

2 votes

Combinatorics and limit problem

2 votes

all values of $ \tan^2 3x \cos^2 x - 4\tan 3x \sin 2x + 16\sin^2 x$ lie in interval

1 vote

if $f \circ g = id_y$, is $f$ injective?

1 vote
Accepted

Is it necessary that there exists $n$ such that for each $ψ$, $T⊨ψ$ implies $φ_n⊨ψ$?

1 vote

Recursive sequence convergence.: $s_{n+1}=\frac{1}{2} (s_n+s_{n-1})$ for $n\geq 2$, where $s_1>s_2>0$

1 vote

Modelling a markov chain

1 vote

basic turing machine

1 vote

Find the close form

1 vote

Sequences (Mathematical Induction)

1 vote

Minimize $\big(3+2a^2\big)\big(3+2b^2\big)\big(3+2c^2\big)$ if $a+b+c=3$ and $(a,b,c) > 0$

1 vote

Is $D(x) + D(y) \leq D(xy)$ true when $\gcd(x, y)=1$ and $xy$ is deficient?

1 vote
Accepted

Characteristic polynomial formulae

1 vote

How can we show that $4\arctan\left({1\over \sqrt{\phi^3}}\right)-\arctan\left({1\over \sqrt{\phi^6-1}}\right)={\pi\over 2}$

1 vote
Accepted

Minimum number of states of a DFA recognizing the regular expression $(a+b)^*b(a+b)$

1 vote

Fibonacci Identity Inductive Proof

1 vote

How to do counting problems with restrictions

1 vote

Maximum of $a_1 \cdot a_2 \cdots a_n$ given $a_1 + \cdots + a_n = 1000$?