Bernhard Riemann (1826–1866) is widely regarded as one of the leading mathematicians of the nineteenth century. He developed Riemannian geometry which is the basis for Einstein’s theory of gravitation. He also developed important theories relating to complex analysis, real analysis, number theory, and mathematical physics. You've now found the staple t-shirt of your wardrobe. It's made of a thicker, heavier cotton, but it's still soft and comfy. And the double stitching on the neckline and sleeves add more durability to what is sure to be a favorite! • 100% ring-spun cotton • Sport Grey is 90% ring-spun cotton, 10% polyester • Dark Heather is 65% polyester, 35% cotton • 4.5 oz/y² (153 g/m²) • Pre-shrunk • Shoulder-to-shoulder taping • Quarter-turned to avoid crease down the center

Size guide