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'I did a bit of a dance': Detectorist finds gold 'mourning ring' engraved with skull and date in UK field - Live Science

14.06.2025 10:56

'I did a bit of a dance': Detectorist finds gold 'mourning ring' engraved with skull and date in UK field - Live Science

The ring, which was found in a field in Norfolk … [+2990 chars]

An amateur metal detectorist in England has unearthed a macabre piece of history: an 18th-century gold

band with an inlaid enamel skull decoration.

Is there a type of function where every point has exactly one tangent line passing through it? If yes, what is this type of function called?