{"query": "The Riemann chain - from Euler's product and Legendre's coun", "count": 1, "results": [{"id": "card_floor_riemann", "title": "The Riemann chain - from Euler's product and Legendre's count to the critical line", "shelf": "codex", "surface": "secular", "snippet": "Two trees. The analytic: Euler's product over the primes (1737), Dirichlet's L-functions (1837). The arithmetic: Legendre's guess at the prime count (1798), Gauss's logarithmic integral (counted 1792,", "authority_tier": "engine_derived", "source": "Narrow Highway - a chain on the one map (operator seed)", "readable": false, "generated": false}], "house": {"door": "FIND", "kind": "cards", "trail": "results", "seal": null, "next_step": {"do": "open the top card", "door": "FIND", "tool": "card_get", "params": {"id": "card_floor_riemann"}}, "ends": "a verdict or a card · the trail · a seal · one next step"}}