The completion of the `t`-chart at any closed point over the closed point of the concrete surface is again a concrete surface over a complete discrete valuation ring, with `t ↦ t'`.

Initializing...

The completion of the `t`-chart at any closed point over the closed point of the concrete surface is again a concrete surface over a complete discrete valuation ring, with `t ↦ t'`. · Prove2Me