Sky is Where His Heart Resides

On a calm and serene morning in New Hampshire’s forests, a young man named Nate McCarvill is flying his drone. He looks at a screen that shows him a video feed from a camera carried by the drone, and he holds a radio with twin joysticks that control the speed, direction, yaw, pitch, and the …

36 Methods of Mathematical Proof

If the proof of a theorem is not immediately apparent, it may be because you are trying the wrong approach. Below are some effective methods of proof that might aim you in the right direction. Proof by obviousness: “The proof is so clear that it need not be mentioned.” Proof by general agreement: “All in …