Index of Persons

Geometers, Master Printers, Pedagogues & Information Designers

Oliver Byrne (1810 – 1880) — Irish Civil Engineer, Surveyor & Mathematical Author

Born in Avoca, County Wicklow; served as Professor of Mathematics at the College for Civil Engineers at Putney and later as Her Majesty’s Surveyor of Settlements in the Falkland Islands. Prolific author of treatises on calculus, dual arithmetic, mechanics, and engineering pocket-books, Byrne achieved lasting renown through his 1847 coloured Elements of Euclid, where he replaced alphabetic vertex pointers with inline chromatic value-tokens.

Augustus De Morgan (1806 – 1871) — British Mathematician & Logician

First Professor of Mathematics at University College London; dismissed Byrne’s coloured Elements as a pedagogical showpiece in A Budget of Paradoxes, illustrating the tension between Victorian symbolic algebraists and visual geometers.

Euclid of Alexandria (fl. c. 300 BC) — Ancient Greek Geometer & Author of the Elements

Compiled the thirteen books of the Stoicheia, Books I–VI of which encompass planar congruence, geometric algebra, circle geometry, regular polygons, Eudoxian proportion, and similarity.

Eudoxus of Cnidus (c. 408 – c. 355 BC) — Ancient Greek Mathematician & Astronomer

Formulated the general equimultiple theory of ratio and proportion for commensurable and incommensurable magnitudes preserved in Book V of Euclid’s Elements—rendered by Byrne as a four-color symbolic algebra.

Sir Thomas Little Heath (1861 – 1940) — Historian of Greek Mathematics & Translator of Euclid

Translated Heiberg’s critical Greek text into the definitive 1908 English edition digitized in geometor/euclid, providing the classical alphabetic reference track in our Rosetta comparisons.

Petrus Hubertus Jacobus Hoenen, S.J. (1880 – 1961) — Philosopher of Geometry

Author of De Noetica Geometriae (1954, geometor/hoenen), whose account of grasping universal geometric necessity directly in the spatial phantasma illuminates why Byrne’s colored regions accelerate deductive judgment.

Quintus Horatius Flaccus (Horace) (65 – 8 BC) — Roman Lyric Poet

Quoted by Oliver Byrne on page viii of the 1847 Introduction (Ars Poetica 180–182) on the cognitive primacy of visual over auditory/verbal presentation.

Ruari McLean (1917 – 2006) — Scottish Typographer & Historian of Book Design

Author of Victorian Book Design and Colour Printing (1963), which restored Oliver Byrne and Charles Whittingham’s 1847 Euclid to prominence in the history of printing.

Johann Heinrich Pestalozzi (1746 – 1827) — Swiss Educational Reformer

Advocated Anschauung—direct perceptual acquaintance with form and number prior to abstract naming—whose pedagogical movement shaped 19th-century visual geometry texts including Byrne’s 1847 Introduction.

William Pickering (1796 – 1854) — London Publisher & Bookseller

Celebrated reformist publisher bearing the Aldine dolphin-and-anchor device; financed the sumptuous 1847 Chiswick Press edition of Byrne’s Euclid at a retail price of twenty-five shillings—nearly double conventional school texts.

Proclus Lycius (Diadochus) (412 – 485 AD) — Neoplatonic Philosopher & Commentator on Euclid

Analyzed the six formal divisions of every Euclidean proposition in his Commentary on Book I (geometor/proclus), directly mirrored by Byrne’s typographic block layout.

Nicholas Rougeux (fl. 2018 – present) — Information Designer & Creator of c82.net/euclid

Published in December 2018 a landmark interactive web edition of Byrne’s Euclid (https://www.c82.net/euclid/) together with his technical essay Making of Byrne’s Euclid, demonstrating how clickable inline shapes illuminate Byrne’s 1847 vision on modern screens. geometor/byrne salutes Rougeux’s contribution while building an independent, 100% public-domain symbolic SymPy and Sphinx architecture.

Robert Simson (1687 – 1768) — Scottish Geometer & Professor at Glasgow

Editor of the influential 1756 Elements of Euclid, whose numbering of 35 Definitions, 3 Postulates, and 12 Axioms governs Byrne’s marginal citations throughout Books I–VI.

Edward Rolf Tufte (b. 1942) — Statistician & Theorist of Analytical Design

Showcased Byrne’s 1847 Euclid in Envisioning Information (1990) as a timeless exemplar of replacing indirect legend/label lookups with direct color-coded visual nouns.

Charles Whittingham the Younger (1795 – 1876) — Master Printer of the Chiswick Press

Revived Caslon Old Face types and decorative Renaissance woodcut initials with William Pickering; achieved sub-millimeter four-pass relief registration of red, blue, yellow, and black woodblocks across 269 pages of Byrne’s Euclid.