Korenblum's constant (68a)

Korenblum's constant

68a

Upper bound, last-listed row

| $0.6778994$ | [[Wang2008](#Wang2008)] | Published numerical upper bound recorded in the survey literature. [CS2015-best-range] |

exact pinned row

| $0.6778994$ | [[Wang2008](#Wang2008)] | Published numerical upper bound recorded in the survey literature. <a href="#CS2015-best-range">[CS2015-best-range]</a> |

tracked since 2026-07-24 — no movement seen yet

Lower bound, last-listed row

| $0.3554$ | [[Wang2025](#Wang2025)] | Published numerical lower bound.tracked since 2026-07-24 — no movement seen yet

Cite this row

Bounds Ledger — Korenblum's constant (68a)
upper bound: $0.6778994$ (tracked since 2026-07-24 — no movement seen yet)
lower bound: $0.3554$ (tracked since 2026-07-24 — no movement seen yet)
Mirrored from teorth/optimizationproblems@2c1968c. These are the last-listed rows of that constant's bounds table — a listing position, not a statement that this bound is the strongest or most recent. A snapshot at that sha, not a live read.
https://u00dxk2.github.io/bounds-ledger/c/68a.html