I have this language $L = \{a^i b^j c^k ∣ i,j,k \geq 0 \text{ and } i+j=k \}$
I dont know how to replace $i,j,k $ with the pumping length p, usually when I make a string s with the pumping length p I just replace the powers with p. But here I belive I have to do something else. Any tips?