Created [[Experiments in Kato's inequality]]. Angle brackets don't render in my box. Those from blog do.

$$\langle \vert a\vert , H f\rangle \ge \langle (\sgn a)(Ka), f\rangle

\quad \forall ..., f\ge0$$

Now me sleep, then work, then perhaps state an unsurprising theorem on stochastic semigroups, then sleep again, etc., then give proof of theorem. That's the plan.

$$\langle \vert a\vert , H f\rangle \ge \langle (\sgn a)(Ka), f\rangle

\quad \forall ..., f\ge0$$

Now me sleep, then work, then perhaps state an unsurprising theorem on stochastic semigroups, then sleep again, etc., then give proof of theorem. That's the plan.