Visually, the “Klein bottle” doesn’t seem all that impressive. On first glance it looks like a trendy Japandi-style vase. And yet it has fascinated mathematicians for more than 140 years. To ...
Get mathy with your crochet! Learn how to create a mobius strip using crochet stitches—as simple or as complicated as you like. This technique is perfect for a cozy ear warmer headband or scarves.
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