安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Newest Questions - Mathematics Stack Exchange
Mathematics Stack Exchange is a platform for asking and answering questions on mathematics at all levels
- (Un-)Countable union of open sets - Mathematics Stack Exchange
A remark: regardless of whether it is true that an infinite union or intersection of open sets is open, when you have a property that holds for every finite collection of sets (in this case, the union or intersection of any finite collection of open sets is open) the validity of the property for an infinite collection doesn't follow from that In other words, induction helps you prove a
- Tour - Mathematics Stack Exchange
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields It's built and run by you as part of the Stack Exchange network of Q A sites With your help, we're working together to build a library of detailed answers to every question about math
- probability - Suppose that $U1, U2, . . . , Un$ are iid $U (0,1)$ and $Sn . . .
I meant it to read: P (S_1 ≤ t) P (S_n ≤t) The product of those probabilities given the assumption is true
- Mathematics Stack Exchange
Q A for people studying math at any level and professionals in related fields
- Mnemonic for Integration by Parts formula? - Mathematics Stack Exchange
The Integration by Parts formula may be stated as: $$\\int uv' = uv - \\int u'v $$ I wonder if anyone has a clever mnemonic for the above formula What I often do is to derive it from the Product R
- $U(n) \\simeq \\frac{SU(n) \\times U(1)}{\\mathbb{Z}_{n}}$ isomorphism
Groups definition U(n) U (n) = the group of n×n n × n unitary matrices ⇒ ⇒ U∈ U(n): UU† = U†U= I ⇒∣ det(U) ∣2= 1 U ∈ U (n): U U † = U † U = I
- The sequence of integers $1, 11, 111, 1111, \ldots$ have two elements . . .
Prove that the sequence $\ {1, 11, 111, 1111, \ldots\}$ will contain two numbers whose difference is a multiple of $2017$ I have been computing some of the immediate multiples of $2017$ to see how
|
|
|