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Grammatically, a '''quantifier''' is a particle that consumes a predicate phrase and produces a noun phrase.


For example: {{t|sa}} “some” is a quantifier, {{t|bỉo}} “…is a cup” is a predicate phrase, and {{t|sa bỉo}} is a noun phrase meaning “some cup(s)”.
A '''determiner''' is a particle that consumes a [[verb form]] and produces a [[noun form]] — specifically, a [[determiner phrase]].


These particles are called “quantifiers” because they semantically corrsepond to a ''logical'' quantifier over a now-bound variable, plus an occurence of that variable. The consumed predicate phrase doubles both as a ''domain'' and a ''name'' for the variable.
For example: {{t|sá}} “some” is a determiner, {{t|bıo}} “…is a cup” is a predicate phrase, and {{t|sá bıo}} is a noun form meaning “some cup(s).


In short, {{t|sa bỉo}} does three things:
== Determiner particles ==
# <span style="color:red">introduces</span> an existentially bound variable {{t|bío}} to the clause;
{| class="wikitable"
# <span style="color:orange">specifies</span> that it refers to a cup (or some cups: see [[plural logic]]);
|-
! Word !! Meaning
|-
| {{done|2}} || X (bound; see below)
|-
| {{t|sá}} || some X
|-
| {{t|tú}} || every/each single X
|-
| {{t|tútu}} || every group of X-es (see below)
|-
| {{t|túq}} || all the Xs together
|-
| {{t|sía}} || no X
|-
| {{t|ní}} || this/that X
|-
| {{t|hú}} || endophoric determiner
|-
| {{t|ké}} || exophoric determiner
|-
| {{t|báq}} || X in general, X-[[kind]]
|-
| {{t|já}} || λX, see [[Property]]
|-
| {{t|hí}} || which X?
|}
 
== Semantics ==
Formally, grammatical determiners tend to correspond to logical '''quantifiers''' over a now-bound variable, plus an occurrence of that variable. For example, the {{t|sa}} determiner corresponds to the <math>\exists</math> quantifier. The tagged predicate phrase doubles both as a ''domain'' and a ''name'' for the variable.
 
In short, {{t|sá bıo}} does three things:
# <span style="color:brown">introduces</span> an existentially bound variable {{t|bío}} to the clause;
# <span style="color:chocolate">specifies</span> that it refers to a cup (or some cups: see [[plural logic]]);
# acts in its place in the sentence as an <span style="color:teal">instance</span> of this variable.
# acts in its place in the sentence as an <span style="color:teal">instance</span> of this variable.


<blockquote>
<blockquote>
{{t|Hẻaq jí <u>sa bỉo</u>.}}<br>
{{t|Heaq jí <u>sá bıo</u>.}}<br>
<math>{\color{red}\exists \textsf{bio}}: {\color{orange}\textrm{Bio}(\textsf{bio}) \,\wedge} \, \textrm{Heaq}(\textsf{ji}, {\color{teal}\textsf{bio}})</math>
<math>
  {\color{brown}     \underbrace{\exists \textsf{bio}:}_{1}}
\; {\color{chocolate} \underbrace{\textrm{Cup}(\textsf{bio}) \mathop\wedge}_{2}}
\; \textrm{Heaq}(\textsf{ji},
    {\color{teal}     \underbrace{\textsf{bio}}_{3}}
  )
</math><br>
I'm holding some cup(s).
</blockquote>
</blockquote>
=== Every, each, all ===
{{t|tú bıo}} quantifies over single cups, i.e. each individual cup. This is often what we want to say, despite not being the "purest" form of for-all quantification in [[plural logic]]; after all, ''groups'' of several cups are also {{t|bio}}. The expression {{t|tútu bıo}} quantifies over the range of "cups-es": the possible values of {{t|bío}} then include not only individual cups, but also groups of cups.
You can read {{t|tútu bıo nä …}} as: "for all ''xx'', if ''xx'' are some cups…"
{{t|túq bıo}} doesn't make a "for-all" statement. Instead it refers to the single entity "all cups (together)".