The map with a gap
David D. Connell and Jim Thurman
Mathnet detectives Kate Monday and George Frankly use math skills like triangulation and scale to find a buried treasure in a ghost town.

by A.G. Hamilton (1982)
Following the success of Logic for Mathematicians, Dr Hamilton has written a text for mathematicians and students of mathematics that contains a description and discussion of the fundamental conceptual and formal apparatus upon which modern pure mathematics relies. The author's intention is to remove some of the mystery that surrounds the foundations of mathematics. He emphasises the intuitive basis of mathematics; the basic notions are numbers and sets and they are considered both informally and formally. The role of axiom systems is part of the discussion but their limitations are pointed out. Formal set theory has its place in the book but Dr Hamilton recognises that this is a part of mathematics and not the basis on which it rests. Throughout, the abstract ideas are liberally illustrated by examples so this account should be well-suited, both specifically as a course text and, more broadly, as background reading. The reader is presumed to have some mathematical experience but no knowledge of mathematical logic is required.
David D. Connell and Jim Thurman
Mathnet detectives Kate Monday and George Frankly use math skills like triangulation and scale to find a buried treasure in a ghost town.
A.D. Garrett
Detective Chief Inspector Kate Simms is in the United States on sabbatical with St Louis PD. She is working with a 'method swap' team, reviewing cold cases, sharing expertise. Forensic expert Professor Nick Fennimore also happens to be in the States on a book tour and is engineering his trip to get down to St Louis--the last thing Simms wants . . . But a call for help from a sheriff's deputy in Oklahoma distracts the professor: a mother dead, her child gone. Fennimore's quick mind rapidly gets to work, and gradually draws the conclusion this might not an isolated case. How many other young mothers have been killed, their murders unsolved, their children unaccounted for - and what of Simms' cold case in St Louis for instance?
Bob Schaller
While Ashley and Adam Arlington are on vacation with their parents in Florida, they help solve an old mystery that involves the Seminole chief Osceola, the Spanish explorer Ponce de León, and the Castillo de San Marcos, a fort in Saint Augustine.
Allison Winn Scotch
Waking up in the hospital as one of two survivors of a horrifying plane crash, Nell struggles to recover from her ensuing amnesia with the help of family, friends, and memory-jogging music before realizing that the stories she is being told do not feel accurate.