Sale ends in
-- H
-- M
-- S
Up to 27% off!
MathVisualProofs profile image MathVisualProofs
Home Shop

Shop Products

All Products Newest Products Popular Products

Albums

Merch Digital downloads

Adult Apparel

T-Shirts

Socks

Shorts

Hoodies

Long Sleeve T-Shirts

Crewneck Sweatshirts

Tank Tops

Baseball T-Shirts

Kids Apparel

Kids T-Shirts

Kids Hoodie

Accessories

Hats

Bags

Stickers

Magnets

Phone Cases

Pins

Home Goods

Mugs

Tapestries

Wall Art

Pillows

Home

Shop

Digital Products

Order Status Contact Support

Cart Preview (0)

Your Cart is empty

Finite Sums of Positive Integers T-Shirt

$16 $22
  • Finite Sums of Positive Integers T-Shirt by Tom's Store 14
  • Finite Sums of Positive Integers by Tom's Store 14
Finite Sums of Positive Integers T-Shirt by Tom's Store 14 Finite Sums of Positive Integers by Tom's Store 14

Color: White

Fit
Style
Size
Size Chart & Product Info

T-Shirt FAQ

A Classic visual proof showing that the sum of the first n positive integers is n times n+1 divided by 2.

100% combed ringspun cotton — the perfect fabric for a graphic tee and the softest in the business. (Due to product availability, fabric varies by color: solids are 100% cotton; heathers and select colors are cotton/poly blends.)

Standard

FedEx 2-Day (4-6 Business Days)

Estimates include printing and processing time.More Shipping Info

We want you to love your order! If for any reason you don't, let us know and we’ll make things right.Learn More

Profile image About MathVisualProofs
I animate visual proofs on YouTube. Check out my official merch!
Powered by Dashery
Contact Support Create a Dashery Store FAQ Order Status Log In Refunds & Returns Shipping Info Size Chart Social Responsibility Product Safety
© MathVisualProofs 2026
Update Your Browsing Preferences
Intellectual Property Policy CA: Do Not Sell My Personal Information Cookie Consent Privacy Policy Terms