For Dali and Morrisseau’s work, the fractal dimension followed an upside-down U-shape over time, at first rising and then falling.

But the American scholar said he was unconvinced Trump would manage to break the bond between Russia and China by pursuing an “upside-down Nixon strategy”.

This dance uses five women, whose formations keep reverting to a broad V geometry while their legs keep suggesting upside-down, narrower V’s.