question: What did von Neumann consider for his model of expanding economy ?
answer: matrix pencil A − λB with nonnegative matrices A and B
turker_answer: Von Neumann considered the matrix pencil A − λB with nonnegative matrices A and B for his model of expanding economy .
rule-based: Von Neumann considered matrix pencil A − λB with nonnegative matrices A and B for his model of expanding economy .