Council of Pisa

The Council of Pisa was an unrecognized ecumenical council of the Catholic Church held in 1409 that attempted to end the Western Schism by deposing Benedict XIII (Avignon) and Gregory XII (Rome). Instead of ending the Western Schism, the Council elected a third papal claimant, Alexander V, who would be succeeded by John XXIII.

Preliminaries

Pisa

Pisa (/ˈpiːzə/; Italian pronunciation: [ˈpiːza]) is a city in Tuscany, Central Italy, straddling the River Arno just before it empties into the Tyrrhenian Sea. It is the capital city of the Province of Pisa. Although Pisa is known worldwide for its leaning tower (the bell tower of the city's cathedral), the city of over 89,940 residents (around 200,000 with the metropolitan area) contains more than 20 other historic churches, several medieval palaces and various bridges across the River Arno. Much of the city's architecture was financed from its history as one of the Italian maritime republics.

The city is also home of the University of Pisa, which has a history going back to the 12th century and also has the mythic Napoleonic Scuola Normale Superiore di Pisa and Sant'Anna School of Advanced Studies as the best sanctioned Superior Graduate Schools in Italy.

History

Ancient times

The origin of the name, Pisa, is a mystery. While the origin of the city had remained unknown for centuries, the Pelasgi, the Greeks, the Etruscans, and the Ligurians had variously been proposed as founders of the city (for example, a colony of the ancient city of Pisa, Greece). Archaeological remains from the 5th century BC confirmed the existence of a city at the sea, trading with Greeks and Gauls. The presence of an Etruscan necropolis, discovered during excavations in the Arena Garibaldi in 1991, confirmed its Etruscan origins.

Pisa (genus)

Pisa is a genus of crabs, containing the following species:

References

Pisa (river)

The Pisa (Polish pronunciation: [ˈpisa]; German: Pissek) is a river in north-eastern Poland with a length of 80.4 km. It belongs to the Masurian Lake District of the Warmian-Masurian Voivodeship. The Pisa river flows from Lake Roś near the town of Pisz, and is a tributary of the Narew, connecting the Lakeland region with the Vistula. The Pisz Forest borders the river on its west bank.

The name Pisa comes from the ancient Prussian language word "pisa", meaning "swamp." The name dates back to the Galindae tribe who lived in the area before the arrival of the Teutonic Knights, who referred to the Pisa as the Galinde. In November 1982 the Polish Centre for Research and Control of the Environment (Ośrodek Badań i Kontroli Środowiska) in Łomża included Pisa in the first class category for purity of its water.

Pisa is a picturesque lowland river with its most scenic stretches around its upper and lower reaches. In the middle part, the river flows through boggy meadows. Along its entire length Pisa is navigable. Considerably deep (1–1.8 m), it has the shallowest depth at its mouth, at the Narew river. Pisa is strongly meandering with the average descent of 32 cm per kilometer. Canoeing down the river from Pisz to Nowogród takes about 4–5 days.