Glottalization Glottalization Glottalization is the complete or partial closure of the glottis during the articulation of another sound. Glottalization of vowels and other sonorants is most often realized as creaky voice (partial closure). Glottalization of obstruent consonants usually involves complete closure of the glottis; another way to describe this phenomenon is to say that a glottal stop is made simultaneously with another consonant. In certain cases, the glottal stop can even wholly replace the voiceless consonant. The term 'glottalized' is also used for ejective and implosive consonants; see glottalic consonant for examples. There are two other ways to represent glottalization of
Closure with a twist formula_40 and a formula_44 such that formula_45 where formula_46 and formula_47 for all formula_48. Closure with a twist Closure with a twist is a property of subsets of an algebraic structure. A subset formula_1 of an algebraic structure formula_2 is said to exhibit closure with a twist if for every two elements there exists an automorphism formula_4 of formula_2 and an element formula_6 such that where "formula_8" is notation for an operation on formula_2 preserved by formula_4. Two examples of algebraic structures which exhibit closure with a twist are the cwatset and the generalized cwatset, or GC-set. In mathematics, a