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A First Class Constraint Generates Not a Gauge Transformation,But a Bad Physical Change:The Case of Electromagnetism
empirical equivalence gauge freedom quantum gravity problem of time
2016/6/15
In Dirac-Bergmann constrained dynamics, a first-class constraint typically does not _alone_ generate a gauge transformation. By direct calculation it is found that each first-class constraint in Maxwe...
A 'Black-White' Missionary on the Imperial Stage:William H. Sheppard and Middle-Class Black Manhood
William H. Sheppard Missionary
2009/6/9
When William M. Morrison first arrived in the Belgian Congo as a missionary in 1897, he observed with great interest his colleague William Sheppard conduct a Sunday chapel meeting. “Mr. Sheppard is to...
Dynamical Emergence of Instantaneous 3-Spaces in a Class of Models of General Relativity
Achronal 3-spaces in GR Distant simultaneity Endurantism
2008/4/11
The Hamiltonian structure of General Relativity (GR), for
both metric and tetrad gravity in a definite continuous family of space-times, is fully exploited in order to show that: i) the "Hole Argumen...
BRIDGE THE GAP --- REFLECTION S ON WHOLE-CLASS INTERACTIVE TEACHING
BRIDGE THE GAP REFLECTIONS
2008/4/8
Pearson (1989) suggests that teaching is intended to create learning, and this seems a reasonable starting position. Mathematics teaching is intended to create the learning of mathematics1 . Over a c...
Capitalism is the first class system in history that pretends not to be one. Consequently, the dominant currents in Australian social theory have denied the existence of class as a social relation. Th...