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The Main Source or Sources of Canonical Principles
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are given in APPR. which also recommends that the pillars may be embellished with several mouldings and decorations. Thus the pillars of the Caulukyan temples indicate full accordance with APPR.
The mandapas and porches of the pre-Caulukyan temples are covered with flat or pyramidal roofs. Early works make a passing reference to Ghanta and Vitānaka. Sm. Su. does not specifically describe the nature of the superstructure, but its treatment of the ceilings (Vitānas) impliedly applies to the pyramidal shape.
The external form of the pyramidal roof of Caulukyan temples are specified as the Samvarṇa. The treatment of the Samvarna of the Caulukyan temples is met with in APPR.
Pre-Caulukyan temples contain no arches but they are introduced in some temples of the Caulukyan period. Among the early works the M. P. makes a reference to it. Among canonical works they are referred in Sm. Su., ARPR., Dīpā etc. the architraves of the maṇḍapa are plain in pre-Caulukyan temples aud decorated in some of the Caulukyan temples.
The decorative treatment is recommended in APPR. and later works.
The Kakṣasana seems introduced in Caulukyan period. Its treatment occurs in APPR. and later works. The same applies to balconies also.
The Sukanāsa also seems introduced in the Caulukyan period, though early works referred to it. The Sukanāsa is described in detail in the canonical works as well.
As regards the Kirtitoraṇa the early works and Sm. Su. make no reference to it. APPR gives a special treatment to it and Dīpārṇava follows it. The treatment of the pillars of the
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