Empty Set Symbol ∅

∅ is the copy target for Empty Set Symbol. Its recorded encoding, U+2205 EMPTY SET, separates the page from nearby symbols with another code point. Useful test strings are “A ∩ B = ∅”; “Solution set: ∅”; “∅ ⊆ A”. Do not style the character in isolation from its field. The page specifies Use ∅ for a set with no members, then adds Do not write {∅} when the empty set itself is intended. Test the final font and the accessible name together. The CMS should preserve the UTF-8 sequence ∅, including ∅ and ∅. This page notes Confusing ∅ with zero and Writing {∅} for an empty set; cube-root, parallel, element remain separate lookup entries. The acceptance test combines a copy of ∅, a U+2205 verification, and a page-level check that all wording still fits Empty Set Symbol. That answer belongs to Empty Set Symbol and should not be copied into an unrelated entry. ∅ is U+2205 EMPTY SET. It denotes the set that contains no elements. For Empty Set Symbol, ∅ is encoded as U+2205, and its Unicode name is EMPTY SET. Common uses for ∅ include Set theory, Probability, Solution sets, Mathematical proofs. Add a readable label when Empty Set Symbol could be misunderstood. Sample uses of Empty Set Symbol include A ∩ B = ∅; Solution set: ∅; ∅ ⊆ A; Cardinality. Preserve the full character or sequence when copying between apps. Avoid these common Empty Set Symbol problems: Confusing ∅ with zero; Writing {∅} for an empty set; Using Ø as a visual substitute. Before final export of Empty Set Symbol, Use ∅ for a set with no members; Do not write {∅} when the empty set itself is intended; Keep ∅ distinct from Ø and ⌀. Empty Set Symbol on Windows: In Microsoft Word, type 2205 and press Alt+X. In other Windows apps, use Character Map or copy ∅ from this page. Empty Set Symbol on Mac: Open Character Viewer with Control+Command+Space and search for the first character name, or copy ∅ from this page. Empty Set Symbol on iPhone: Tap the copy button for ∅, then paste it into the target app. Save it as a text replacement for repeated use. For Empty Set Symbol copy and paste use, select ∅, copy it as text, paste it into the destination, and confirm that the result still matches the intended character.