Lorenzo Mascheroni

Lorenzo Mascheroni (May 13, 1750 – July 14, 1800) was an Italian mathematician, born near Bergamo, Italy. Image File history File links Lorenzo_Mascheroni. ... Image File history File links Lorenzo_Mascheroni. ... May 13 is the 133rd day of the year in the Gregorian Calendar (134th in leap years). ... Events March 2 - Small earthquake in London, England April 4 - Small earthquake in Warrington, England August 23 - Small earthquake in Spalding, England September 30 - Small earthquake in Northampton, England November 16 – Westminster Bridge officially opened Jonas Hanway is the first Englishman to use an umbrella James Gray reveals her sex... July 14 is the 195th day (196th in leap years) of the year in the Gregorian Calendar, with 170 days remaining. ... 1800 (MDCCC) was an exceptional common year starting on Wednesday of the Gregorian calendar, but a leap year starting on Sunday of the Julian calendar. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... Bergamo is a town in Lombardy, Italy, about 40km northeast of Milan. ...

At first mainly interested in the humanities (poetry and Greek language), he eventually became professor of mathematics at Pavia. Church San Michele in Pavia The Old Bridge (Ponte Vecchio) on the Ticino river is a symbol of Pavia Pavìa (the ancient Ticinum) (population 71,000) is a town and comune of south-western Lombardy, northern Italy, 35 km south of Milan on the lower Ticino river near its...

In his Geometria del Compasso (Pavia, 1797), he proved that any geometrical construction which can be done with compass and straightedge, can also be done with compasses alone. However, the priority for this result (now known as the Mohr-Mascheroni theorem) belongs to the Dane Georg Mohr, who published a proof already in 1672. Creating a regular hexagon with a ruler and compass Construction of a regular pentagon Compass and straightedge or ruler-and-compass construction is the construction of lengths or angles using only an idealized ruler and compass. ... In mathematics, the Mohr-Mascheroni theorem states that any geometric construction that can be performed by a ruler and compass can be performed by a compass alone. ... Jørgen Mohr (Latinised Georg(ius) Mohr) (April 1, 1640 - January 26, 1697) was a Danish mathematician. ...

In his Adnotationes ad calculum integrale Euleri (1790) he published a calculation of what is now known as the Euler-Mascheroni constant. The Euler-Mascheroni constant is a mathematical constant, used mainly in number theory, and is defined as the limiting difference between the harmonic series and the natural logarithm: Its approximate value is γ ≈ 0. ...

He died in Paris. City flag City coat of arms Motto: Fluctuat nec mergitur (Latin: Tossed by the waves, she does not sink) Location Coordinates Time Zone CET (GMT +1) Administration Country France Région ÃŽle-de-France Département Paris (75) Subdivisions 20 arrondissements Mayor Bertrand Delanoë  (PS) (since 2001) City Statistics Land...

External links

• O'Connor, John J., and Edmund F. Robertson. "Lorenzo Mascheroni". MacTutor History of Mathematics archive.