The one essential item is his laptop, because he writes his books on his daily hour-and-a-half round-trip commute from Westchester County.
In opposition to von Neumann, the Gleason-type argument derives restrictions on value assignments like (3) only for sets of compatible observables; but still one and the same observable can be a member of different commuting sets, and it is essential to the arguments that the observable gets assigned the same value in both sets, i.e. that the value assignment is not sensitive to a context.
He has had to get used to new commuting and getting by without some of his essential research material, like a collection of academic texts that researchers in his group relied on in planning financial strategy.
The GPS Navigation system has become a utility that is essential to travel, whether it be daily commute or cross country excursion.
Essential kit for the school run, skate park and rushed commute, scooters are soaring in popularity.
Audible Channels also organizes some of its content into 20 Audible Playlists, like the "essential stories of the day," meditation, as well as commute-sized comedy, and compilations on science, history, technology and more.
Over 60% of consumers do essential food shopping by car, and 50% use cars and vans to commute to work.
Poor people survive (in cities) by procuring essential goods and services themselves: by fetching water, negotiating for food, waiting at the hospital, commuting for many hours, etc.
Dominated by the Chinese business community, some of whom commute to Hong Kong by hydrofoil, and to a lesser extent by a Catholic bishop & priests, Macao retains an essential conservatism.
We apply the results to give criteria of essential selfadjointness for quadratic form sums and to give a characterization of w*-continuous, Markovian semigroups on M, which commute with the modular automorphism groupσφ0t.
