Declension table of vyāpyatva

Neuter	Singular	Dual	Plural
Nominative	vyāpyatvam	vyāpyatve	vyāpyatvāni
Vocative	vyāpyatva	vyāpyatve	vyāpyatvāni
Accusative	vyāpyatvam	vyāpyatve	vyāpyatvāni
Instrumental	vyāpyatvena	vyāpyatvābhyām	vyāpyatvaiḥ
Dative	vyāpyatvāya	vyāpyatvābhyām	vyāpyatvebhyaḥ
Ablative	vyāpyatvāt	vyāpyatvābhyām	vyāpyatvebhyaḥ
Genitive	vyāpyatvasya	vyāpyatvayoḥ	vyāpyatvānām
Locative	vyāpyatve	vyāpyatvayoḥ	vyāpyatveṣu

Compound vyāpyatva -

Adverb -vyāpyatvam -vyāpyatvāt