英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

mammatus    
乳房状的

乳房状的


请选择你想看的字典辞典：
单词字典翻译
mammatus查看　mammatus　在百度字典中的解释百度英翻中〔查看〕
mammatus查看　mammatus　在Google字典中的解释Google英翻中〔查看〕
mammatus查看　mammatus　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Prove the sum of two subspaces is also a subspace. - Physics Forums
    Hi I'm trying to prove that the sum of two subspaces [tex]U[ tex] and [tex]W[ tex] is also a subspace Homework Equations [tex]U[ tex] is a subspace of [tex]V[ tex] if [tex]U[ tex] is also a vector space and it contains the additive identity, is closed under addition, and closed under scalar multiplication
  • Why R2 is not a subspace of R3? - Physics Forums
    That said, originally, I was a little surprised by the question It is common to think of R^2 as being a subset of R^3 using the obvious isomorphism to a subspace of R^3: (a, b)-> (a, b, 0) Strictly speaking, it is not R^2 that is a subspace of R^3, it is that subspace But one has to very strict!
  • Solving Vector Subspace Questions: A B in V - Physics Forums
    b) Determine whether or not A ∪ B is a vector subspace of V Prove your answer My strategy for this is to find two subspaces in V and find a counter claim so that the union of A and B is not a subspace and similarly for the intersection of A and B would this be strategy be enough to answer the question? thanks so much
  • How to determine the smallest subspace? - Physics Forums
    How can one know how small a subspace is? initially I thought it was determined from the number of elements in the subspace, but there infinite number of elements Can also someone please give an example by giving two subspaces and show the ways to compare which one is smaller than which?
  • Distance from a vector to a subspace - Physics Forums
    Hi smile, :) Let \((X,\,d)\) be a metric space and \(U\subset X\) Distance between a point \(a\in X\) and \(U\) is defined as,
  • What is a Closed Linear Subspace? - Physics Forums
    Yeah, that's what I mean I don't understand why people talk about 'closed linear subspaces' when every linear subspace is closed under scalar multiplication and vector addition Here's an example, "If L is a closed linear subspace of H, then the set of of all vectors in H that are orthogonal to every vector in L is itself a closed linear
  • Dimension of a vector space and its subspaces - Physics Forums
    A proper, non-trivial, subspace with the same dimension as the space can only be obtained if the vector space is infinite-dimensional Last edited: Jan 24, 2024 Reply
  • Subspaces in R4: Get Started Understand Now - Physics Forums
    Define W in R^2 by (x,y) is in W if and only if x=0 let's show it is a subspace 1 (0,0) is in W, clearly
  • Linear Algebra: Prove that the set of invertible matrices is a Subspace
    Homework Statement Is U = {A| A \\in nℝn, A is invertible} a subspace of nℝn, the space of all nxn matrices? The Attempt at a Solution This is easy to prove if you assume the regular operations of vector addition and scalar multiplication Then the Identity matrix is in the set but 0*I and
  • Subspace of a Vector Space over Complex Numbers Proof. - Physics Forums
    Homework Statement Let V = C (complex numbers) Prove that the only C-subspaces of V are V itself and {0} Homework Equations The Attempt at a Solution Well this problem has me confused since I have clearly found a complex subspace for example all the complex numbers of the form {a+ib





中文字典-英文字典  2005-2009