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My comment has been deleted, may I ask why?
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@JockeyAntvasima said:It may be best if non-staff stop commenting here, unless they received special permission, as we need to try to make some progress.
I didn't know about that. Assuming that is true, so, then? What's exactly the problem? We are not really using any specific kind of infinite-dimensional space, just assuming an arbitrary structure with that many dimensions, there's no need to be that nitpicky.DontTalk said:Hamel basis allows for countably infinite dimensional spaces, just not Banach spaces.
Schauder basis is not important, as you don't define dimensions over it, as far as I am aware.
I am... really not fine with saying any infinite-dimensional space has dimension equal to the continuum. I am aware the system I propose goes neck-deep into mathematics, but they are streamlined enough to only apply to the higher parts of the system. There is no need to nitpick lower parts to that extent.DontTalk said:We could just define all as power equal to destroying large arbitrary c-dimensional manifold. Though I'm not familiar with the different kinds of infinite dimensional manifolds, so not sure if it's a good idea.
Should be an arbitary space over R at least, otherwise you end up with some weird space over F2 or something.
I guess we could just say manifolds for finite dimensions and large infinite dimensional structures beyond that.
I don't see why it wouldn't. I do know that there are infinite-dimensional spaces that have the property of second-countability on them, such as the aforementioned R^N.DontTalk said:Is second countable even required for infinite dimensional manifolds? Not an expert on that topic, but by the general definition I find on the infinite dimensional case it isn't.
I would find it strange if Hilbert space structure is not as good as Manifold structure, as it is generally much more well behaved...
Yeah, that's what I said. If a given space is not Hausdorff nor satisfies any of the separation axioms, then it is not metrizable in the first place. I mentioned second-countability due to that property's additional relation to manifolds and metrizability in the first place, although I guess you already saw my answer in the edit I made.DontTalk said:The important part is that it's Hausdorff for that. As said, many not second-countable topologies are metrizable. You can get a metric on any given number of dimensions.
You could abstractly define distance past a certain point, but I don't think you could so such in a weird space which doesn't satisfy any separation axiom and is neither metrizable nor uniformizable. Again, see above.DontTalk said:What does "reproducing physical spacetime" mean, though? You can have things like distance and angles.
Yeah, but only under spaces defined under the Indiscrete Topology, a property which Manifolds (the stuff which dimensions are defined under, for the most part) cannot have by definition. Sure, Second-Countability is a constant that can exist regardless of cardinality in the context of trivial topologies, but when we are dealing with Manifolds and stuff with different properties which have nothing to do with indiscrete spaces, then it has a very strict upper bound when it comes to its cardinality.DontTalk said:In regards to the edit you made to the last point I can just say that it was only meant as counter example, not as a suggestion for what to use. The point is that second countable topologies exist regardless of cardinality, meaning that we can't exclude there being suitable topologies due to that criteria at least.
Again, I really don't see why we need to be this nitpicky in relation to fiction: To paraphrase myself: I am aware that the system I am proposing uses Mathematics in the first place, but there must be nuance here, and it is streamlined so the bulk of it only applies to the higher tiers. Starting to get picky over this stuff will lead nowhere, especially when we get to heavy assumptions which don't at all fit with most of fiction such as "every infinite-dimensional banach space is necessarily uncountably infinite-d". You should remember we are basing this off of size.DontTalk said:If we are at the point of how to define things similar to physical spacetime: Can we even consider any countably dimensional spaces as such? Most strong assumptions about the nature of such a space would give us something like an incomplete space. So, if we have a character destroy an entire infinite dimensional space, is it plausible to assume it is incomplete?
I find pressing undo on ya keyboard gets it back.MasterOfArda said:That feeling when you write a long post, but forget to copy it before posting and wikia swallows it. RIP.
The world is a dark place.