(Logic) The property of a logical theory that whenever a wff is a theorem then it must also be valid. Symbolically, letting T represent a theory within logic L, this can be represented as the property that whenever is true, then must also be true, for any wff Ï† of logic L.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
Find another word for fastness. In this page you can discover 17 synonyms, antonyms, idiomatic expressions, and related words for fastness, like: swiftness, haste, rapidity, speed, firmness, hardness, security, soundness, stability, stableness and steadiness.
The color also has a smooth gloss finish whilst possessing superior light fastness.
Where else in this northern fastness can you find the word for light repeated so often that it glows.
Ideal for embroidery machines; it has a high tensile strength and excellent color fastness.
The dial s remarkable and keeps the high contrast color fastness due to a professional processing where it has been electro-plated.
Reproduced using the latest technology, these beautiful prints have a potential light fastness of over 200 years.