Event segment: Difference between revisions

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=== Null Event Segment ===
The ''null event segment'' over time interval <math> [t_l, t_u] \subseteqsubset \mathbb{T} </math> is denoted by <math> \epsilon_{[t_l, t_u]}</math> which means that there is no event over <math> [t_l, t_u] </math>.
 
=== Unit Event Segment ===