I am interested in showing that a sequentially-closed convex cone is closed in order to prove a representation theorem for a pre-ordered preference relation. Thank you in advance!
2026-03-28 20:11:39.1774728699
Is there any example of a sequentially-closed convex cone which is not closed?
145 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail At
1
There are 1 best solutions below
Related Questions in FUNCTIONAL-ANALYSIS
- On sufficient condition for pre-compactness "in measure"(i.e. in Young measure space)
- Why is necessary ask $F$ to be infinite in order to obtain: $ f(v)=0$ for all $ f\in V^* \implies v=0 $
- Prove or disprove the following inequality
- Unbounded linear operator, projection from graph not open
- $\| (I-T)^{-1}|_{\ker(I-T)^\perp} \| \geq 1$ for all compact operator $T$ in an infinite dimensional Hilbert space
- Elementary question on continuity and locally square integrability of a function
- Bijection between $\Delta(A)$ and $\mathrm{Max}(A)$
- Exercise 1.105 of Megginson's "An Introduction to Banach Space Theory"
- Reference request for a lemma on the expected value of Hermitian polynomials of Gaussian random variables.
- If $A$ generates the $C_0$-semigroup $\{T_t;t\ge0\}$, then $Au=f \Rightarrow u=-\int_0^\infty T_t f dt$?
Related Questions in WEAK-CONVERGENCE
- Convergence in distribution of a discretized random variable and generated sigma-algebras
- Find a sequence converging in distribution but not weakly
- Does $X_n\xrightarrow[n\to+\infty]{law} 0$ imply$\mathbb{E}\left(\log |1-X_n| \right)\xrightarrow[n\to +\infty]{} 0$?
- If $X_n\rightarrow X$ in distribution, how to show that $\mathbb{P}(X_n=x)\rightarrow 0$ if $F$ is continuous at $x$?
- Equivalence of weak convergences
- Weak convergence under linear operators
- Convergence of Probability Measures and Respective Distribution Functions
- Convergence in distribution of uniform
- Convergence of Maximum of Cauchy Random Variables
- Weak Convergence Confusion
Related Questions in TOPOLOGICAL-VECTOR-SPACES
- Countable dense subset of functions of exponential type 1 that decay along the positive real axis
- Let $X$ be a topological vector space. Then how you show $A^\perp$ is closed in $X^*$ under the strong topology?
- Box topology defines a topological vector space?
- Are there analogues to orthogonal transformations in non-orientable surfaces?
- Is Hilbert space a Normed Space or a Inner Product Space? Or it have to be both at the same time?
- Are most linear operators invertible?
- The finest locally convex topology is not metrizable
- Non-Hausdorff topology on the germs of holomorphic functions
- Topological isomorphism between $C^{\infty}(\mathbb{R}) = \lim_{\leftarrow}{C^{k}([-k, k])}$
- Can a linear subspace in Banach space be the union of several other subspaces?
Trending Questions
- Induction on the number of equations
- How to convince a math teacher of this simple and obvious fact?
- Find $E[XY|Y+Z=1 ]$
- Refuting the Anti-Cantor Cranks
- What are imaginary numbers?
- Determine the adjoint of $\tilde Q(x)$ for $\tilde Q(x)u:=(Qu)(x)$ where $Q:U→L^2(Ω,ℝ^d$ is a Hilbert-Schmidt operator and $U$ is a Hilbert space
- Why does this innovative method of subtraction from a third grader always work?
- How do we know that the number $1$ is not equal to the number $-1$?
- What are the Implications of having VΩ as a model for a theory?
- Defining a Galois Field based on primitive element versus polynomial?
- Can't find the relationship between two columns of numbers. Please Help
- Is computer science a branch of mathematics?
- Is there a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?
- Identification of a quadrilateral as a trapezoid, rectangle, or square
- Generator of inertia group in function field extension
Popular # Hahtags
second-order-logic
numerical-methods
puzzle
logic
probability
number-theory
winding-number
real-analysis
integration
calculus
complex-analysis
sequences-and-series
proof-writing
set-theory
functions
homotopy-theory
elementary-number-theory
ordinary-differential-equations
circles
derivatives
game-theory
definite-integrals
elementary-set-theory
limits
multivariable-calculus
geometry
algebraic-number-theory
proof-verification
partial-derivative
algebra-precalculus
Popular Questions
- What is the integral of 1/x?
- How many squares actually ARE in this picture? Is this a trick question with no right answer?
- Is a matrix multiplied with its transpose something special?
- What is the difference between independent and mutually exclusive events?
- Visually stunning math concepts which are easy to explain
- taylor series of $\ln(1+x)$?
- How to tell if a set of vectors spans a space?
- Calculus question taking derivative to find horizontal tangent line
- How to determine if a function is one-to-one?
- Determine if vectors are linearly independent
- What does it mean to have a determinant equal to zero?
- Is this Batman equation for real?
- How to find perpendicular vector to another vector?
- How to find mean and median from histogram
- How many sides does a circle have?
Consider the space $(\ell_\infty)^*$ endowed with the weak*-topology. The canonical image of $\ell_1$ in that space is sequentially closed by the Schur property of $\ell_1$, however it is also dense by Goldstine's theorem.