Pāṇini sūtras

A Dvandva compound of words denoting (persons who have studied) subjects, which in their order of study are not remote from each other, is singular.

1. adhyayanataḥअध्ययनतः

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	adhyayanaअध्ययन	adhyayanataḥअध्ययनतः	study	adhyayanअध्ययन् + plus ataḥअतः

2. a+viprakṛṣṭa+ākhyānāmअ+विप्रकृष्ट+आख्यानाम्

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   aअ	aअ	aअ	not	aअ
   vव्	viprakṛṣविप्रकृष्	viprakṛṣṭaविप्रकृष्ट	distant	viprakṛṣṭविप्रकृष्ट् + plus aअ
   āआ	ākhyāआख्या	ākhyānāmआख्यानाम्	name	ākhyआख्य् + plus ānआन्

Anuvṛtti

1. ekavacanamएकवचनम् 2·4·1

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   eए	ekavacanaएकवचन	ekavacanamएकवचनम्	singular	ekavacanएकवचन् + plus amअम्

2. dvandvaḥद्वन्द्वः 2·4·2

   Part	Lexeme	Sandhi form	Meaning	Stem + termination
   dद्	dvaṃdvaद्वंद्व	dvandvaḥद्वन्द्वः	DvaṃdvaDवंद्व	dvaṃdvद्वंद्व् + plus aḥअः