In theoretical physics, 'X' is a hypothetical universe with no global definition of charge. What a Klein bottle is to a closed two-dimensional surface, 'X' is to a closed three-dimensional volume. The name is a reference to a character in 'Y's book.
'X' can be considered to allow at least two topologically-distinct routes between any two points (it is doubly connected), and if one connection (or "handle") is declared to be a "conventional" spatial connection, at least one other must be deemed to be a non-orientable wormhole connection.
Once these two connections are made, we can no longer define whether a given particle is matter or antimatter. A particle might appear as an electron when viewed along one route, and as a positron when viewed along the other. If we define a reference charge as nominally positive and bring it alongside our "undefined charge" particle, the two particles may attract if brought together along one route, and repel if brought together along another - the 'X' loses the ability to distinguish between positive and negative charges, except locally.
'X'??
'X'-Alice universe
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13 years ago
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