{"echo_id":"34976018-ecce-4da6-96ce-97cab4823a7f","kind":"person","canonical_name":"Nikolai Lobachevsky","aliases":["Nikolai Ivanovich Lobachevsky"],"summary":"Nikolai Lobachevsky, 1792–1856. Mathematician who built a geometry in which Euclid’s parallel postulate fails. Born 1 December 1792. Died 24 February 1856. This Echo is the name and span, not a biography.","years":"1792–1856","place_hint":null,"tags":["person","historical"],"verified":false,"public_publish":true,"primary_image_url":"https://media-vayati.s3.us-east-va.io.cloud.ovh.us/echoes/visages/34976018-ecce-4da6-96ce-97cab4823a7f/91cb96dc6c7296a9e8e6.jpg","primary_image_type":"upload","is_placeholder":false,"image_is_placeholder":false,"created_at":"2026-10-17T06:18:47.438Z","updated_at":"2026-10-17T06:18:47.973Z","parent_place_echo_id":null,"place_grain":null,"nested_places":[],"parent_place":null}