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MEX (windowing system)

MEX (Multiple EXposure) was " Silicon Graphics' original high-performance windowing system", used on 68k-based IRIS systems and early IRIS 4D systems. MEX was originally loaded over a network through the utilization of GL1 routines kept on a remote host machine, usually a VAX. When the IRIS 1400 workstation and GL2-W ( IRIX) were introduced, MEX was allowed to run locally. MEX was used in IRIX from the GL2-W2.1.0 release to the 4D1-2.3 release.

With the introduction of 4D1-3.0 (IRIX 3.0), and the complete migration to MIPS processors, support for the GL / GL2 powered MEX ended in the late 1980s, replaced by Sun Microsystems' NeWS and the 4Sight window manager.

Mex (mathematics)

In combinatorial game theory, the mex, or "minimum excludant", of a set of ordinals denotes the smallest ordinal not contained in the set.

Some examples:


mex(∅) = 0


mex({1, 2, 3}) = 0


mex({0, 2, 4, 6, …}) = 1


mex({0, 1, 4, 7, 12}) = 2


mex({0, 1, 2, 3, …}) = ω


mex({0, 1, 2, 3, …, ω}) = ω + 1

where is the limit ordinal for the natural numbers.

In the Sprague-Grundy theory the minimum excluded ordinal is used to determine the nimber of a normal-play impartial game, which is a game in which either player has the same moves in each position and the last player to move wins. The nimber is equal to 0 for a game that is lost immediately by the first player, and is equal to the mex of the nimbers of all possible next positions for any other game.

For example, in a one-pile version of Nim, the game starts with a pile of stones, and the player to move may take any positive number of stones. If is zero stones, the nimber is 0 because the mex of the empty set of legal moves is the nimber 0. If is 1 stone, the player to move will leave 0 stones, and , gives the nimber for this case. If is 2 stones, the player to move can leave 0 or 1 stones, giving the nimber 2 as the mex of the nimbers { 0, 1 }. In general, the player to move with a pile of stones can leave anywhere from 0 to stones; the mex of the nimbers is always the nimber . The first player wins in Nim if and only if the nimber is not zero, so from this analysis we can conclude that the first player wins if and only if the starting number of stones in a one-pile game of Nim is not zero; the winning move is to take all the stones.

If we change the game so that the player to move can take up to 3 stones only, then with stones, the successor states have nimbers , giving a mex of 0. Since the nimber for 4 stones is 0, the first player loses. The second player's strategy is to respond to whatever move the first player makes by taking the rest of the stones. For stones, the nimbers of the successor states of 2, 3, and 4 stones are the nimbers 2, 3, and 0 (as we just calculated); the mex of the set of nimbers is the nimber 1, so starting with 5 stones in this game is a win for the first player.

See nimbers for more details on the meaning of nimber values.

MEX

MEX may refer to:

  • MEX (windowing system), Silicon Graphics' original high-performance windowing system
  • MEX file, a type of C/C++ or FORTRAN source code in MATLAB scripts
  • Mexico City International Airport, IATA airport code
  • Mexico, IOC and FIFA country code
  • Mars Express Orbiter, the European Space Agency mission to Mars
  • Mexborough railway station, England; National Rail station code MEX
  • Maju Expressway, an expressway in Kuala Lumpur, Malaysia

Mex may refer to:

  • Several municipalities in Switzerland:
    • Mex, Vaud
    • Mex, Valais
  • Mex (mathematics), a mathematical function in game theory

MeX may refer to:

  • The MeX, a nickname for the Boyd Martin Theatre, one of the theatres of The Kentucky Center
Mex (Vaud)
  1. redirect Mex, Vaud
Mex (Valais)
  1. redirect Mex, Valais

Usage examples of "mex".

A clacking on the breeze, like the maracas the Mex girls played sometimes.

Mex dollars into his hand, got down from the pedicab, and strutted over to the guard.

If none of you are familiar with Mex cooking, I suggest you let me order you some arroz con pollo, which tastes like plain American grub, only more so, with some tortillas which are sort of a cross betwixt pancakes and soda crackers, in taste at least.

She went out, the Mex secreted in the soiled bodice that hardly covered her flaccid breasts, another coin, a twentieth of its value clutched in her hand.

But it only came to me when a Mex pal told me how lots of Anglo settlers had been experimenting in the desert around Yuma with exotic crops that the lying gal might have fed me a half truth about another retired doc entirely.

If none of you are familiar with Mex cooking, I suggest you let me order you some arroz con pollo, which tastes like plain American grub, only more so, with some tortillas which are sort of a cross betwixt pancakes and soda crackers, in taste at least.

She was dark skinned, looking Mex rather than Yanqui, and her long black hair was tied back in a ponytail with a bow of red velvet ribbon.

I also had a kid with a lost dog, and her mother was mixed up in dogfights with some lowlife from the Mex Mafia.

The awsome rep Border Mex gals enjoyed for being dangerous to cross was largely due to the Indian blood and folkways so many of them denied.

The restaurant was tall for a cantina, a two-story job with pink walls and green tablecloths and enough bullfight posters, banderillas, and other ersatz Mex crap hanging around for a real matador to go for the owner's ears and tail.

One of the miners yelled in, "Some Mex greaser jist killed Frank Boilings and his partner, Hiram Flagg.

Hollenbeck might be a good place to look--but East LA was Mex, Benavides, Lopez and Duarte still had ties there, and that might blow their decoy’s cover.

Hollenbeck might be a good place to look--but East LA was Mex, Benavides, Lopez and Duarte still had ties there, and that might blow their decoy's cover.

Once into MEXico they skirted the sprawling slums of Tijuana, then picked up MEX 1, the Carretera Transpeninsula highway that runs the full length of Baja California.

Once into MEXico they skirted the sprawling slums of Tijuana, then picked up MEX 1, the Carretera Transper linsula highway that runs the full length of Baja California.