(i) The document discusses the scope for reopening an income tax assessment under section 147 when an assessment has already been completed under section 143(3).
(ii) It summarizes a Delhi High Court ruling that established conditions for validly initiating reassessment proceedings, including that the assessing officer must form a prima facie opinion of under-assessment based on records.
(iii) It analyzes situations where reassessment would amount to a change of opinion versus situations where new information emerges, and notes a dissenting opinion that held reassessment should not be allowed if full particulars were originally provided.