1. Bullpen includes a Greek alphabet, fractions and numeric ordinals

2. Built has fractions, primes, numeric ordinals, compact accents, the Indian rupee and the Turkish lira

3. Synonyms for Breviaries include hymnals, missals, prayer books, psalters, service books, hymn books, psalmbooks, euchologies, formularies and ordinals

4. A countable periodic reduced abelian group is determined uniquely up to isomorphism by its Ulm invariants for all prime numbers p and countable ordinals α.

5. The Catalogue lists the manuscript Antiphonaries of ten Flemish collections and libraries, but does not include books that contain only limited amounts of music for the Divine Office, such as manuscript processionals and ordinals, or printed Antiphonaries, and other liturgical books.

6. The Constructible universe or Goedel's Constructible universe, commonly denoted by \(L\), is a proper class defined as the union of a hierarchy \((L_{\alpha})_{\alpha \in \textrm{On}}\) of sets called Constructible hierarchy indexed by the proper class \(\textrm{On}\) of ordinals