Johannes Acronius Frisius (1520 – 18 October 1564) was a Dutch

doctor Doctor or The Doctor may refer to: Personal titles * Doctor (title), the holder of an accredited academic degree * A medical practitioner, including: ** Physician ** Surgeon ** Dentist ** Veterinary physician ** Optometrist *Other roles * ...

and

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...

of the 16th century. He was named after his city of birth, Akkrum in

Friesland Friesland (, ; official fry, Fryslân ), historically and traditionally known as Frisia, is a province of the Netherlands located in the country's northern part. It is situated west of Groningen, northwest of Drenthe and Overijssel, north of ...

. From 1547 he worked as

professor Professor (commonly abbreviated as Prof.) is an academic rank at universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a "person who professes". Professor ...

of mathematics in

Basel , french: link=no, Bâlois(e), it, Basilese , neighboring_municipalities= Allschwil (BL), Hégenheim (FR-68), Binningen (BL), Birsfelden (BL), Bottmingen (BL), Huningue (FR-68), Münchenstein (BL), Muttenz (BL), Reinach (BL), Riehen (BS) ...

, then after 1549 as professor of

logic Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences or of logical truths. It is a formal science investigating how conclusions follow from premis ...

, and in 1564 of

medicine Medicine is the science and Praxis (process), practice of caring for a patient, managing the diagnosis, prognosis, Preventive medicine, prevention, therapy, treatment, Palliative care, palliation of their injury or disease, and Health promotion ...

. He died from the

plague Plague or The Plague may refer to: Agriculture, fauna, and medicine *Plague (disease), a disease caused by ''Yersinia pestis'' * An epidemic of infectious disease (medical or agricultural) * A pandemic caused by such a disease * A swarm of pes ...

in the same year. Apart from mathematical and scientific works, he wrote

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power ...

poetry Poetry (derived from the Greek '' poiesis'', "making"), also called verse, is a form of literature that uses aesthetic and often rhythmic qualities of language − such as phonaesthetics, sound symbolism, and metre − to evoke meanings ...

and

humanist Humanism is a philosophical stance that emphasizes the individual and social potential and agency of human beings. It considers human beings the starting point for serious moral and philosophical inquiry. The meaning of the term "humani ...

tracts. According to the ''

Historical Dictionary of Switzerland The ''Historical Dictionary of Switzerland'' is an encyclopedia on the history of Switzerland that aims to take into account the results of modern historical research in a manner accessible to a broader audience. The encyclopedia is publish ...

'', "nothing justifies the usual identification of A roniuswith the philologist and botanist Johannes Atrocianus".

Publications

* ''De motu terrae'' * ''De sphaera'' * ''De astrolabio et annuli astronomici confectione'' * ''Cronicon und Prognosticon astronomica'', manuscript * biography and 45

aphorism An aphorism (from Greek ἀφορισμός: ''aphorismos'', denoting 'delimitation', 'distinction', and 'definition') is a concise, terse, laconic, or memorable expression of a general truth or principle. Aphorisms are often handed down by t ...

s of the

anabaptist Anabaptism (from Neo-Latin , from the Greek : 're-' and 'baptism', german: Täufer, earlier also )Since the middle of the 20th century, the German-speaking world no longer uses the term (translation: "Re-baptizers"), considering it biased. ...

David Joris David Joris (c. 1501 – 25 August 1556, sometimes Jan Jorisz or Joriszoon; formerly anglicised David Gorge) was an important Anabaptist leader in the Netherlands before 1540. Life Joris was probably born in Flanders, the son of Marietje Jan ...

References

{{DEFAULTSORT:Acronius Frisius, Johannes 1520 births 1564 deaths 16th-century deaths from plague (disease) 16th-century Dutch mathematicians Frisius Dutch Renaissance humanists Frisian scientists People from Boarnsterhim Infectious disease deaths in Switzerland