Property information
x existence starts during or after y if and only if the time point at which x starts is after or equivalent to the time point at which y starts. Formally: x existence starts during or after y iff α (x) >= α (y).
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The relations here were created based on work originally by Fabian Neuhaus and David Osumi-Sutherland. The work has not yet been vetted and errors in definitions may have occurred during transcription.