physical space :: space of quantum eigenstates/degrees of freedom

moving in space :: entangling/measuring more degrees of freedom

velocity :: rate of entanglement/measurement

speed of light :: maximum rate of measurement

light cone :: entanglement cone

c (speed of light) :: ℏ (quantum constant)

spacelike separation :: branchlike separation

choice of foliation (spacelike hypersurfaces) :: choice of observer

inertial frame :: observer with no external input

light signals as carriers of information :: [[ spins as carriers of quantum information ]]

world line :: measurement plan

simultaneity (spacelike hypersurface) :: branchlike hypersurface defined by an observer

relativity of simultaneity (different spacelike orderings of events) :: different branchlike ordering by different observers

(inertial) frame independence :: observer independence [both agree about timelike ordering]

timelike ordering of events is detectable :: uncertainty principle (timelike measurements affect each other)

Minkowski space :: XXXX

barnpole paradox ::

no preferred frame ::

momentum ::

energy [[ of motion ]] ::

time dilation : quantum Zeno’s paradox

spatial graph :: branchial graph

spacetime causal graph :: (part of) multiway causal graph

moving in space :: entangling/measuring more degrees of freedom

velocity :: rate of entanglement/measurement

speed of light :: maximum rate of measurement

light cone :: entanglement cone

c (speed of light) :: ℏ (quantum constant)

spacelike separation :: branchlike separation

choice of foliation (spacelike hypersurfaces) :: choice of observer

inertial frame :: observer with no external input

light signals as carriers of information :: [[ spins as carriers of quantum information ]]

world line :: measurement plan

simultaneity (spacelike hypersurface) :: branchlike hypersurface defined by an observer

relativity of simultaneity (different spacelike orderings of events) :: different branchlike ordering by different observers

(inertial) frame independence :: observer independence [both agree about timelike ordering]

timelike ordering of events is detectable :: uncertainty principle (timelike measurements affect each other)

Minkowski space :: XXXX

barnpole paradox ::

no preferred frame ::

momentum ::

energy [[ of motion ]] ::

time dilation : quantum Zeno’s paradox

spatial graph :: branchial graph

spacetime causal graph :: (part of) multiway causal graph

[[[uncertainty principle (nonzero commutators) :: spacetime curvature (nonzero Riemann tensor)]]]

quantum measurements : updating events with a choice of outcomes

quantum eigenstates : branches in multiway system

observer in quantum mechanics : branchlike hypersurface foliation

elementary unit of entanglement : critical pair branching

quantum eigenstates : branches in multiway system

observer in quantum mechanics : branchlike hypersurface foliation

elementary unit of entanglement : critical pair branching

states are rays in Hilbert space : the branchial graph is transitive

#### Other claims

Other claims

Critical pair branch : canonical commutation relation

[r1, r2] = XXXX

[r1, r2] = XXXX

“Multiway relativity” : timelike orderings are preserved, independent of the choice of branchlike surfaces (aka choice of observer)