History of Regulators of elliptic curves over $\mathbb{Q}$ of rank $3$

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2026-08-15 11:01 bmatschke how well the digits are known: assumed-bound (PARI ellheight documents no accuracy; see the details) current
2026-08-13 22:06 bmatschke how well the digits are known: assumed-bound (interval widened by a hand-chosen 4 ulps (blur_real_interval))
2026-08-09 09:14 flattening entries rewritten as records with named parameters
2026-08-09 08:35 data-repository import the current state of the data repository reviewed
2021-05-07 17:53 bmatschke from the data repository, 42a87287
2021-05-06 19:50 bmatschke from the data repository, 034b717f

What changed between 2026-08-13 22:06 and 2026-08-15 11:01

from line 50 (15 lines, 8 more than before) @@ -50,7 +50,15 @@
   - CITE{LMFDB}   rigour: assumed-bound-  rigour details: The computed interval was widened by four units in the last place-    (blur_real_interval). That bound was asserted rather than derived, and the justification-    was not recorded.+  rigour details: 'Computed with Sage''s E.regulator(proof=True). The arithmetic is+    proven: proof=True means the Mordell-Weil basis is certified, so the regulator+    is the right quantity rather than a multiple of it. The numerics are not. The+    heights come from PARI''s ellheight, whose documentation states the normalisation+    and nothing about accuracy; Sage''s own implementation truncates Silverman''s+    series at a term count derived from his published bound, but tracks no rounding+    error through the loop, and its working precision is a guard found by patching+    cases that failed. The height pairing matrix is then built in ordinary floating+    point, its off-diagonal entries by a subtraction of nearly equal heights, and+    a determinant is taken. Recomputing at double precision agrees to about 204 digits,+    so the hundred written here are almost certainly right; nothing bounds them.' Display properties:   number-header: $\text{Reg}(E/\mathbb{Q})$ 

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