[過去ﾛｸﾞ] Inter-universal geometry と ABC予想 (応援スレ) 65 (1002ﾚｽ)
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532(1): 2022/04/23(土)20:48 ID:MU2asfqc(16/24) AAS
>>531
つづき
＜原文＞
That is to say, it is precisely this sort of situation that is referred to by the term “inter-universal”.
Put another way, a change of universe may be thought of [cf. the discussion of §2.7, (i)] as a sort of abstract/combinatorial/arithmetic version of the classical notion of a “change of coordinates”.
In this context, it is perhaps of interest to observe that, from a purely classical point of view, the notion of a [physical] “universe” was typically visualized as a copy of Euclidean three-space.
Thus, from this classical point of view, a “change of universe” literally corresponds to a “classical change of the coordinate system - i.e., the labelling apparatus - applied to label points in Euclidean three-space”!
＜google訳＞
つまり、まさにこの種の状況が「宇宙際」という言葉で呼ばれているのです。
言い換えれば、宇宙の変化は考えられるかもしれません[cf. §2.7の議論、（i）]「座標の変化」の古典的な概念の一種の抽象/組み合わせ/算術バージョンとして。
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533(1): 2022/04/23(土)20:49 ID:MU2asfqc(17/24) AAS
>>532
つづき
＜原文＞
Indeed, from an even more elementary point of view, perhaps the simplest example of the essential phenomenon under consideration here is the following purely combinatorial phenomenon: Consider the string of symbols
010
? i.e., where “0” and “1” are to be understood as formal symbols.
Then, from the point of view of the length two substring 01 on the left, the digit “1” of this substring may be specified by means of its “coordinate relative to this substring”, namely, as the symbol to the far right of the substring 01. In a similar vein, from the point of view of the length two substring 10 on the right, the digit “1” of this substring may be specified by means of its “coordinate relative to this substring”, namely, as the symbol to the far left of the substring 10.
On the other hand, neither of these specifications via “substring-based coordinate systems”is meaningful to the opposite length two substring; that is to say, only the solitary abstract symbol “1” is simultaneously meaningful, as a device for specifying the digit of interest, relative to both of the “substring-based coordinate systems”.
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