1 Johannes Kepler: His Time in Linz International Fuzzy-Mathematics Conference, Linz, February 2012 Short Version Program Johannes Kepler´s stay in Linz Guided walk to some places of interest Keplers Home at Rathausgasse 5 Stadtmuseum „Linz Genesis“ Old Town Hall Landhaus with the planetary fountain Kepler Monument on the Schlossberg Walk trough the Castle of Linz, Hofgasse to the Hauptplatz

2 Time table 1671 Birth of Johannes Kepler in Weil der Stadt, WürtembergEducation in Maulbronn and Tuebingen in theology and philosophy 1594 Kepler is appointed as a „mathematican and calender-maker“ in Graz, marriage with Barbara Mueller, two children Kepler in Prague, first as assistant of Tycho de Brahe, then (´1601) follower of Tycho as the mathematician of the emperor Rudolph II Kepler in Linz, again as teacher but also as mathematician of the emperor ( Mathias and Ferdinand) second marriage with Susanna Reuttinger, six children, 1627 Kepler in Ulm, printing of the Rudolphine Tables Sagan and Death in Regensburg

3 Tycho de Brahe (Prague)

4 Prague

5 Kepler in Prague October 1600 Kepler arrives with his family in Prague Assistant to Tychoe Brahe to help in the preparation of the Rudolphinae Tables for the emperor Rudolph II October 1601 death of Tycho de Brahe, Kepler is determined as a follower in the position of the mathematician of Rudolph II 1604 Astronomiae Pars Optica 1609 Astronomia Nova 1611 Dioptrice, July 1611 death of Kepler´s wife Barbara Jan 1612 death of Rudolph II, Kepler has lost his position and prepares to leave Prague, invitation to Linz Mathias becomes in July 1612 the new emperor

6 Astronomia Pars Optica, Prague 1604 Astronomia Nova, Prague 1609

7 Emperors Rudolph II and Mathias

8 Linz

9 Most important books of Johanns Kepler during his stay in LinzNova Stereometria Doliorum Vinariorum, Linz 1615 Messekunst Archimedis, Linz 1616 Ephemerides Novae, Linz 1617/19 Epitome Astronomiae Copernicanae, Lib I,II,III, Linz 1618 Hamonices Mundi Libri V, Linz 1619 Epitomes Astronomiae Copernicanae Lib IV, Linz 1620 Chilias Logarithmorum, Marburg 1624 Tabulae Rudolphinae

10 Nova Stereometria Doliorum Vinariorum Linz 1615 Gauging of wine casks with a measuring stick

11 Epitome Astronomiae Copernicanae,Linz 1618,1620,Frankfurt 1621 Harmonices Mundi Libri V, Linz 1619

12

13 Important events during the stay of Johannes Kepler in LinzMarch arrival of Kepler in Linz, position at the district school of Upper Austria „because of his famed ability and praisworthy virtues“ Exclusion from the communion by Daniel Hitzler, pastor of the Luthereran Congregation in Linz since Kepler was considered as a calvinist ( „a unhealthy sheep“ ) October 1613 second marriage with Susanna Reuttinger (24) of Eferding Kepler establishes the first printer Johannes Plank (from Erfurt) in Linz Kepler´s mother witch trial , Kepler stays from Sept 1620 to November 1621 in Würtemberg to defend his mother 1621 despite of the ongoing Counter Reformation emperor Ferdinand ratifies the position of Kepler as the mathematician of the emperor 1626 Siege of Linz by the peasants of Stephan Fadinger against the Bavarian troops October 1626 Kepler and his family leave Linz for Regensburg and Ulm,respectively.

14 Pastor Daniel Hitzler

15 Marriage of Sussanna Reuttinger celebration at the inn „Golden Lion“ in Eferding

16 Landhaus (House of Governement of Upper Austria) in Linz planetary fountain

17 Witch trial against Kepler´s mother Katharina Kepler 1617- 1621

18 Kepler´s home between 1621 and 1625 Rathausgasse 5

19 Siege of Linz 1626

20 Mathias Bernegger, professor in Strassburg, friend of Kepler Schreib-Kalender of the Year 1618

21 Machine of Schickard (Tuebingen) Chilias Logarithmorum Marburg 1624

22 Ulm

23 Tabulae Rudolphinae Ulm 1627

24 Johannes Kepler

25 Biographical Books on Johannes KeplerMax Caspar: Kepler, translated and edited by C. Doris Hellman, Dover Publications, New York 1993 (References and Bibiographical Citations by Owen Gingerich) Arthur Koestler: The Sleepwalkers, London and New York 1959 in german language Walter Gerlach . Martha List: Johannes Kepler, Dokumente zu Leben und Werk, München 1971 Justus Schmidt: Johannes Kepler, Rudolf Trauner Verlag, Linz 1970 Günther Doebel: Johannes Kepler, Verlag Styria, Graz 1983

26 Kepler walk Rathausgasse 5, Kepler´s home during the time 1621-1625Linz City Museum „Genesis“, Holographic presentation of Johannes Kepler Upper Austria Government Building, Planetary Fountain there Kepler´s Monument on the Schlossberg Hofgasse, where Kepler had from 1613 – 1619 his home