1. The question "Is Ikkyu big?" is not a mathematical or scientific problem but rather a subjective or factual inquiry about a person named Ikkyu. 2. Since this is not a math or physics problem, there are no formulas or calculations to apply. 3. To answer such a question, one would need context about who Ikkyu is and what "big" refers to (e.g., physical size, importance, influence). 4. As a math tutor, I focus on mathematical problems and cannot provide a factual answer to this question.