Subnode [[@flancian/planethopf]] in node [[planethopf]]
from garden/flancian/planet hopf.md by @flancian
from garden/flancian/planet hopf.md by @flancian
planet hopf

an [[object]] in [[gauge theory]]
 http://www.math.toronto.edu/~drorbn/Gallery/KnottedObjects/PlanetHopf/
 [[yt]] https://www.youtube.com/watch?v=2xiEEtoa_4
 [[push]] [[eric weinstein explains gauge symmetry]]

[[eric weinstein]]
 with [[joe rogan]]
 [[gauge symmetry]]
 "[[curvature]] in this context is the [[escherness]] of a [[system]]"
 [[aharonov bohm effect]]]]
 the "weirdness" in [[escherness]] is not actually weird in mathematical fields, and apparently also in [[physics]]: some physical objects seem to behave with escherness
 the limits of linguistic thinking: there's something about [[gauge theory]] that makes it so that it's much easier/at all possible to understand via visual thinking

[[spinners]] are another thing that, when explained with words, just doesn't make sense
 [[philippine wine dance]]
 [[joe rogan]] makes the right question at 18:20

[[klein gordon]] equation
 [[paul dirac]] came up with a square equation that produced a spinner; one of the three most important equations in physics