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propositional logic, Boolean algebra, first-order logic. ⊥ {\displaystyle \bot } denotes a proposition that is always false. The symbol ⊥ may also refer to perpendicular lines. The proposition. ⊥ ∧ P {\displaystyle \bot \wedge P} is always false since at least one of the two is unconditionally false. ∀.
If and only if. In logic and related fields such as mathematics and philosophy, " if and only if " (often shortened as " iff ") is paraphrased by the biconditional, a logical connective [ 1] between statements. The biconditional is true in two cases, where either both statements are true or both are false. The connective is biconditional (a ...
In logic, a logical connective (also called a logical operator, sentential connective, or sentential operator) is a logical constant. Connectives can be used to connect logical formulas. For instance in the syntax of propositional logic, the binary connective can be used to join the two atomic formulas and , rendering the complex formula .
Venn diagram of. In logic, mathematics and linguistics, and ( ) is the truth-functional operator of conjunction or logical conjunction. The logical connective of this operator is typically represented as 1 or or (prefix) or or 2 in which is the most modern and widely used. The and of a set of operands is true if and only if all of its operands ...
Connective tissue disease, also known as connective tissue disorder, or collagen vascular diseases, refers to any disorder that affect the connective tissue. [ 1] The body's structures are held together by connective tissues, consisting of two distinct proteins: elastin and collagen. Tendons, ligaments, skin, cartilage, bone, and blood vessels ...
In medicine, desmoplasia is the growth of fibrous connective tissue. [ 1] It is also called a desmoplastic reaction to emphasize that it is secondary to an insult. Desmoplasia may occur around a neoplasm, causing dense fibrosis around the tumor, [ 1] or scar tissue ( adhesions) within the abdomen after abdominal surgery.
Connective tissue is one of the four primary types of animal tissue, along with epithelial tissue, muscle tissue, and nervous tissue. [ 1] It develops mostly from the mesenchyme, derived from the mesoderm, the middle embryonic germ layer. [ 2] Connective tissue is found in between other tissues everywhere in the body, including the nervous system.
Logical biconditional. In logic and mathematics, the logical biconditional, also known as material biconditional or equivalence or biimplication or bientailment, is the logical connective used to conjoin two statements and to form the statement " if and only if " (often abbreviated as " iff " [ 1] ), where is known as the antecedent, and the ...