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Results for topology
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0 votes
2 answers
331 views

subspace topology and strong topology

Suppose $X$ is a locally convex space and $Y$ is a subspace of the strong dual of $X$, is the induced topology on Y equivalent to the strong topology $b(Y,Y')$ on $Y$? … If this is not correct, then on what spaces does the strong topology coincide with the initial topology? …
Richard Kim's user avatar
2 votes
0 answers
587 views

Valuation topology vs modified valuation topology

with this topology is a Hausdorff topological field, and if $K$ is an ordered field then the order topology coincides with the valuation topology. … topology. …
Chilote's user avatar
  • 596
26 votes
15 answers
19k views

Learning Topology

EDIT (Harry): Since this question in its original form was poorly stated (asked about topology rather than graph theory), but we have a list of Topology books in the answers, I guess you should go ahead … EDIT (David): The original question was asking for places to learn topology with an eye towards applying it to computer science (artificial neural networks in particular) …
1 vote
1 answer
959 views

Strong topology

A dual of $E^{\star}$ given by the $\beta(E^{\star\star}, E^{\star})$ topology is usually denoted by $E^{\star\star}$ and it is called a double dual of $E$. … Fact 1 It is well-known that if $E$ is an (F)-space then the (initial) (F)-space topology coincides with strong topology $\beta(E, E^{\star})$. …
Celeban's user avatar
  • 145
0 votes
1 answer
125 views

Product topology and order convergence topology

We define the order convergence topology, denoted by $\tau_o(P)$. … It is not hard to verify that this defines a topology. …
Dominic van der Zypen's user avatar
4 votes
0 answers
175 views

Is the test function topology a Mackey topology?

For a general topological vector space $X$ with chosen dual space $X',$ the "Mackey topology" is the strongest topology for which the continuous dual is $X'$. … My question is: is the canonical LF topology on $\mathcal{C}^{\infty}_{c}(\mathbb{R}^d)$ equal to the Mackey topology induced by the space of distributions? …
Jon's user avatar
  • 41
1 vote
1 answer
253 views

Interval topology and order convergence topology

Now we define the order convergence topology, denoted by $\tau_o(P)$. … It is not hard to verify that this defines a topology. Question: Given any poset $(P,\leq)$, does $\tau_i(P)\subseteq \tau_o(P)$ hold? …
user avatar
2 votes
0 answers
123 views

Pro-G_p*G_q topology, profinite topology

The pro-$W$ topology on a group $G$ is the unique group topology such that the set of normal subgroups $N$ with $G/N$ in $W$ is a fundamental system of neighborhoods of the identity. …
user182085's user avatar
2 votes
0 answers
79 views

Associated barrelled topology of norm topology on $C_c(X)$

convex topology is barrelled) and similarly $\eta^{ub}$ as the associated ultrabornological topology. … a Banach space topology. …
yada's user avatar
  • 1,773
0 votes
0 answers
132 views

Mackey topology

Recall that for a Hausdorff locally convex space $X$ the Mackey topology $\tau (X^*,X)$ is the topology in its topological dual $X^*$ of uniform convergence on all weakly compact absolutely convex subsets …
Wer Wer's user avatar
6 votes
1 answer
350 views

Equivalence of $\sigma$-weak topology to another topology

Define a topology $\tau_1$ on $B(\mathcal H)$ by the family of seminorms $x\mapsto |Tr(xa)|,$ $a\in L^1(B(\mathcal H)).$ Here $B(\mathcal H)$ denotes the set of all bounded linear maps on $\mathcal H$ … Again define the $\sigma$-WOT topology $\tau_2$ on $B(\mathcal H)$ by pulling back the weak operator topology of $B(\mathcal H\otimes\ell_2)$ to $B(\mathcal H)$ via the map $x\mapsto x\otimes 1.$ How to …
A beginner mathmatician's user avatar
0 votes
2 answers
282 views

Distinguishable under manifold topology but indistinguishable under the Alexandrov topology

In such case it is shown that the Alexandrov topology and the Manifolds topology deviate such that the manifold topology is strictly finer than the Alexandrov topology. … My question is that: The necessary and sufficient conditions under which two points that are distinguishable under the Manifold topology, are indistinguishable under the Alexandrov topology for a generic …
Bastam Tajik's user avatar
17 votes
2 answers
2k views

Foundations of topology

I recently went to a talk of Oleg Viro where he expressed his dissatisfaction with current foundations of differential topology parallel to what has been discussed here. … Like the language of topoi (and unlike 'tame topology'), it is a kind of topology 'without points' - a direct approach to 'shape'. ... appropriate for dealing with finite spaces... …
Bananeen's user avatar
  • 1,190
37 votes
5 answers
5k views

Locales and Topology.

As someone more used to point-set topology, who is unfamiliar with the inner workings of lattice theory, I am looking to learn about the localic interpretation of topology, of which I only have a limited … What are some recent results in point-free topology that are unique to the subject, i.e., not translations of results from general topology into localic language? …
3 votes
1 answer
557 views

Path Metric Topology

Is there an example of a metric space $(X,d)$ whose corresponding path metric, $d^\prime$ generates a strictly finer topology compared to the topology generated by $d$? …
Temari's user avatar
  • 305

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