Under mild regularity assumptions, the transport problem is stable in following sense: if a sequence of optimal plans π1,π2,… converges weakly to plan π, then π also (between its marginals). Alfonsi, Corbetta and Jourdain (Ann. Inst. Henri Poincaré Probab. Stat. 56 (2020) 1706–1729) asked whether same property true for martingale problem. This question seems particularly pressing since motivate...

We discuss the significant implications of three eye-witness drawings total solar eclipse on 1706 May 12 in comparison with two 1715 3, for our understanding space climate change. These events took place just after what has been termed “deep Maunder Minimum” but fall within “extended being an interval when sunspot numbers start to recover. Maria Clara Eimmert’s image is particularly important b...