/**
 * A comprehensive set of all MathML tag names.
 * This includes current and deprecated MathML elements from the MathML specification.
 */
export declare const mathmlTags: Set<string>;
/**
 * Check if a given tag name is a MathML tag.
 * @param tagName - The tag name to check
 * @returns true if the tag is a MathML tag, false otherwise
 */
export declare const isMathmlTag: (tagName: string) => boolean;
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