20/04/23 11:29:55 Ayy0wuIh.net
”inter-universal”の用語解説があったから貼る
正直意味わからんけどｗ、グロタンディーク宇宙とはあんまり関係ないね。山下解説外している気がする
（参考）
URLﾘﾝｸ(www.kurims.kyoto-u.ac.jp)
INTER-UNIVERSAL TEICHMULLER THEORY IV:
LOG-VOLUME COMPUTATIONS AND
SET-THEORETIC FOUNDATIONS
Shinichi Mochizuki
April 2020
Abstract.
(抜粋)
Moreover, it is precisely these foundational
issues surrounding the vertical and horizontal arrows of the log-theta-lattice that led
naturally to the introduction of the term “inter-universal”.
P6
Again, the fundamental tool that makes
this possible, i.e., that allows one to express constructions in the new universes in
terms that makes sense in the original universe is precisely
the species-theoretic formulation ? i.e., the formulation via settheoretic formulas that do not depend on particular choices invoked
in particular universes ? of the constructions of interest
? cf. the discussion of Remarks 3.1.2, 3.1.3, 3.1.4, 3.1.5, 3.6.2, 3.6.3. This is
the p