Explore the foundations of mathematics with ‘The Logic of Number’ by Neil Tennant. This insightful book presents a groundbreaking Natural Logicist account of natural, rational, and real numbers, built upon the free Core Logic system. Tennant introduces innovative natural deduction rules for number-abstraction operators, offering a novel ‘single-barreled’ approach distinct from traditional methods. Discover how this theory addresses applicability, number hierarchy, metaphysical nature, and the cardinality of real numbers, bridging logic and geometric intuition. Ideal for mathematicians and philosophers seeking a rigorous, foundational understanding of numerical systems. Discover the logic behind numbers at The Bookish Owl.