NFA to DFA conversion -
when converting nfa dfa there may result image below... question is, necessary write state {4} it's going 0 state? mean without showing input symbol 1 of {4} same picture below right? or no?

it’s matter of convention. personally, prefer not clutter dfa unnecessary states, since dfas obtained via transformation nfas tend become quite complex anyway, , since it’s deterministic know non-displayed transition must invalid.
however, i’ve experienced many people in academia teach / use other convention, , require transitions explicitly shown. when working ta (tutor) i’ve had discussion professor – wanted tutors deduct points on final tests missing transitions in dfas convinced him deducting points unfair.
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