proper face

proper face

[¦präp·ər ′fās]
(mathematics)
For a simplex, a face whose dimension is strictly less than that of the simplex.
For a convex polytope, the intersection of the convex polytope with one of the hyperplanes enclosing it.
Mentioned in ?
References in classic literature ?
Now, at last, I may get rid of this frightful head; for we were told, you remember, that only the Truth Pond could restore to me my proper face.
This proper face was what he beheld in the looking-glass.
The PS1,200 price tag one website put on tickets for one of the singer's Glasgow Hydro shows must be some sort of record-breaker, too, at more than 10 times the proper face value.
It is beyond time for the CHP to apologize for many of its past policies, have a proper face lift and reposition itself.
JSP says apart from the massive savings in costs, a Force 8 half-mask with PressToCheck is far more effective than a disposable paper mask, since the unique system enables the wearer to determine whether a proper face fit has been achieved.
Fit testing of all Hammond Firefighters for the purpose of determining proper face mask size.
Most reported cases occured in pediatric patients, because in this population maintaining a proper face mask fit during respiratory treatments is particulary difficult (5).
The AirSafe automatic safety controller monitors and maintains proper face velocity so accurate balance readings can be ensured without turbulence or vibration.
Accurate alignment marks promote proper face angle at impact and the precision milled face guarantees a perfectly fiat striking surface.
Taking the mirror down is the obvious solution but then I wouldn't be able to put my proper face on so wouldn't dare go out again.
I've sat among them and made the proper face For their assembly--a primitive nervous system That works its members after the mind is gone--And long disliked myself because I kissed them A greeting to fake a folk than be alone Though they meet in the public gloom of a museum.
When using hazardous chemicals, particularly aerosols, use a proper face respirator (available in hardware stores) and wear gloves and goggles.