HansonMB writes: Back in September, Motherboard ventured into the English countryside to listen to the universe. There lives a brand new piece of Europe’s already-massive Low Frequency Radio Array radio telescope: a clever EU-wide installation that uses low-tech antennas and supercomputer-power data processing to transform into a giant mega-telescope, absorbing cosmic radio waves from the full sky.
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"