A non-deterministic Turing machine (NTM) is a theoretical computational model that, unlike its deterministic counterpart, can make multiple choices at each step of its computation. This means that for a given input and state, an NTM can transition to several possible next states simultaneously, effectively exploring many computational paths at once. This characteristic allows NTMs to solve certain problems more efficiently than deterministic machines, showcasing their significance in the study of computability and complexity theory.
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