No. 13,599 in Russian
недействительности
"Invalidity" or "nonexistence."
In a sentence
Документ был признан недействительным из-за недействительности подписи.
The document was declared invalid due to the invalidity of the signature.
Here, "недействительности" refers to the invalid status or inapplicability of the signature as a reason for the document's invalidation.
Вопрос недействительности договора стал центральным в судебном процессе.
The issue of the invalidity of the contract became central in the trial.
In this sentence, "недействительности" is used to describe the concept or fact of a contract being invalid as the focus of legal debate.
Теория недействительности предположений оказалась спорной.
The theory of the invalidity of assumptions turned out to be controversial.
Here, "недействительности" conveys the concept of invalidity or inapplicability in an abstract or theoretical context regarding assumptions.
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