existential quantifiers - Definition. Was ist existential quantifiers
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Was (wer) ist existential quantifiers - definition

FORM OF PSYCHOTHERAPY
Existential psychotherapy; Existential Psychology; Existential psychology; Existential Therapy; Existential psychotherapies; Existential psychodynamics

Existential quantification         
LOGICAL QUANTIFICATION STATING THAT A STATEMENT HOLDS FOR AT LEAST ONE OBJECT
There exists; There exist; Existential quantifier; For some; Existential proposition; There is a unique; ∃; Mathematical existence; There Exists; Something (logic); Existential operator; Existentially quantified; ∃I; ∃E; ∄; Exist (logic)
In predicate logic, an existential quantification is a type of quantifier, a logical constant which is interpreted as "there exists", "there is at least one", or "for some". It is usually denoted by the logical operator symbol ∃, which, when used together with a predicate variable, is called an existential quantifier ("" or "").
existential quantifier         
LOGICAL QUANTIFICATION STATING THAT A STATEMENT HOLDS FOR AT LEAST ONE OBJECT
There exists; There exist; Existential quantifier; For some; Existential proposition; There is a unique; ∃; Mathematical existence; There Exists; Something (logic); Existential operator; Existentially quantified; ∃I; ∃E; ∄; Exist (logic)
Existential instantiation         
Existential elimination
In predicate logic, existential instantiation (also called existential elimination)Hurley, Patrick. A Concise Introduction to Logic.

Wikipedia

Existential therapy

Existential psychotherapy is a form of psychotherapy based on the model of human nature and experience developed by the existential tradition of European philosophy. It focuses on concepts that are universally applicable to human existence including death, freedom, responsibility, and the meaning of life. Instead of regarding human experiences such as anxiety, alienation, and depression as implying the presence of mental illness, existential psychotherapy sees these experiences as natural stages in a normal process of human development and maturation. In facilitating this process of development and maturation, existential psychotherapy involves a philosophical exploration of an individual's experiences stressing the individual's freedom and responsibility to facilitate a higher degree of meaning and well-being in their life.