Book:Lynn Arthur Steen/Counterexamples in Topology/Second Edition/Errata

Union of Exteriors contains Exterior of Intersection
Part $\text I$: Basic Definitions: Section $1.$ General Introduction: Closures and Interiors

Compactness Properties Preserved under Continuous Mapping
Part $\text I$: Basic Definitions: Section $3$. Compactness: Invariance Properties

Equivalence of Metrics is not Defined
Part $\text I$: Basic Definitions: Section $5$. Metric Spaces: Complete Metric Spaces

Definition of Uniformity
Part $\text I$: Basic Definitions: Section $5$. Metric Spaces: Uniformities

Accumulation Points of Sequence of Distinct Terms in Infinite Particular Point Space
Part $\text {II}$: Counterexamples: $9 \text { - } 10$: Infinite Particular Point Topology: Item $1$

Non-Trivial Particular Point Topology is not $T_4$
Part $\text {II}$: Counterexamples: $8 \text { - } 10$: Particular Point Topology: Item $4$

Particular Point Space is not Weakly Countably Compact
Part $\text {II}$: Counterexamples: $8 \text { - } 10$: Particular Point Topology: Item $12$

Sets in Modified Fort Space are Separated‎
Part $\text{II}$: Counterexamples: $27$: Modified Fort Space: Item $4$

Kuratowski's Closure-Complement Problem‎
Part $\text {II}$: Counterexamples: $32$: Special Subsets of the Real Line: Item $9$: Figure $12$

Complement of Set of Rational Pairs in Real Euclidean Plane is Arc-Connected‎
Part $\text{II}$: Counterexamples: $33$: Special Subsets of the Plane: Item $2$

Linearly Ordered Space is $T_5$‎
Part $\text {II}$: Counterexamples: $39$. Order Topology: Item $6$

Telophase Topology‎
Part $\text {II}$: Counterexamples: $73$. Telophase Topology

Bibliography: Appert
Bibliography