Numberphile - gallery Dr. Federico Ardila – The Cross Ratio (opens new window)Dr. Anatasia Chavez – 21-card Trick (opens new window)Dr. Lisa Goldberg – Is the “hot hand” real? (opens new window)Dr. June Huh – g-conjecture (opens new window)Dr. Cliff Stoll – How to Make a Klein Bottle from an Old Pair of Jeans (opens new window)Dr. Tadashi Tokieda – Floating Balls and Lift (opens new window)
