Update documentation of TaylorNModel

[schillic]

I was not sure how to describe order_bounds.

[lucaferranti]

I know you just updated, so it's not your fault, but I dont think that is correct, I would say a taylor model is a rigorous approximation of a function composed by a polynomial approximation and an interval bound on the error

[coveralls]

Pull Request Test Coverage Report for Build 4235146100

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 0.057%

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Totals
Change from base Build 4125212071:	0.0%
Covered Lines:	1
Relevant Lines:	1761

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💛 - Coveralls

[lucaferranti]

WoW! quite a lot of damage for a docstring update! 🤣

Just kiding it fails on main too. @lbenet do you remember off the top of your head if some feature depending on 1.9 was recently introduced? Otherwise I can try to have a look at this at some point (this is not related to this MR though)

[lucaferranti]

relevant stacktrace

ERROR: LoadError: UndefVarError: RetAlloc not defined
Stacktrace:
 [1] getproperty(x::Module, f::Symbol)
   @ Base ./Base.jl:31
 [2] top-level scope
   @ ~/work/TaylorModels.jl/TaylorModels.jl/src/validatedODEs.jl:420
 [3] include(mod::Module, _path::String)

[lbenet]

The problems were introduced by merging JuliaDiff/TaylorSeries.jl#312. TS was processing inconsistently the series of some functions for intervals, in the sense of not caring for the natural domain of the function. I started working on that, but got distracted. Sorry...

[schillic]

Given that the build failures are unrelated, is there anything you expect me to do here?

[lbenet]

Regarding Taylor1Model and TaylorNModel, these were some structs defined during early essays, which have been left there; they do not allow the functionality that has been implemented for TaylorModel1 and TaylorModelN. So, I don't think it is worth using them... Sorry for the very late response, I just noticed this.

Regarding the failure of the tests, as I mentioned it is related to JuliaDiff/TaylorSeries.jl#312; it seems to me that the problem is the tests we implemented for TaylorModel1{TaylorN{T}}. Again, I haven't had time to get into that, but I'll try to remedy soon.

[schillic]

Okay, then I close this PR.

[lbenet]

Thanks... and sorry for the veeery late response...

[schillic]

No problem. Regarding the other problem, you have a branch that seems to work (#146). Maybe you can just merge that? :)