Mathematician:Mathematicians/Sorted By Birthday/January

$1$st

 * $1878$:
 * $1913$:
 * $1920$:

$2$nd

 * $1729$:
 * $1897$:
 * $1920$:
 * $1923$:

$3$rd

 * $1777$:

$5$th

 * $1838$:
 * $1871$:
 * $1884$:
 * $1909$:
 * $1923$:

$6$th

 * $1920$:
 * $1922$:

$7$th

 * $1871$:
 * $1907$:
 * $1923$:

$8$th

 * $1852$:
 * $1888$:
 * $1915$:
 * $1923$:
 * $1932$:

$9$th

 * $1873$:

$10$th

 * $1875$:
 * $1899$:

$11$th

 * $1826$:

$12$th

 * $1853$:
 * $1915$:

$13$th

 * $1876$:
 * $1902$:
 * $1931$:

$14$th

 * $1887$:
 * $1902$:

$15$th

 * $1717$:
 * $1814$:
 * $1850$:
 * $1876$:

$16$th

 * $1885$:
 * $1926$:

$17$th

 * $1492$:
 * $1905$:
 * $1911$:
 * $1911$:
 * $1917$:

$18$th

 * $1886$:

$19$th

 * $1736$:
 * $1747$:
 * $1879$:
 * $1902$:
 * $1911$:
 * $1917$:

$20$th

 * $1775$:
 * $1895$:

$21$st

 * $1827$:
 * $1852$:
 * $1860$:
 * $1874$:

$22$nd

 * $1831$:
 * $1874$:
 * $1880$:

$23$rd

 * $1862$:
 * $1924$:

$24$th

 * $1902$:

$25$th

 * $1736$:
 * $1812$:
 * $1843$:
 * $1854$:
 * $1870$:
 * $1926$:
 * $1926$:

$26$th

 * $1862$:

$27$th

 * $1832$:

$28$th

 * $1540$:
 * $1888$:

$29$th

 * $1810$:
 * $1888$:
 * $1928$:

$31$st

 * $1841$:
 * $1886$:

Precise date unknown

 * $1526$:
 * $1872$: