Pith Number

pith:W4XAHCEY

pith:2023:W4XAHCEYSBEQYF4JTNR2YMZYEP

not attested not anchored not stored refs pending

Instance-specific linear relaxations of semidefinite optimization problems

Daniel de Roux, Robert Carr, R. Ravi

arxiv:2302.08118 v3 · 2023-02-16 · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W4XAHCEYSBEQYF4JTNR2YMZYEP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-20T00:02:44.781710Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b72e03889890490c17899b63ac333823f5cf54c8022a339395ce24048614b6f4

Aliases

arxiv: 2302.08118 · arxiv_version: 2302.08118v3 · doi: 10.48550/arxiv.2302.08118 · pith_short_12: W4XAHCEYSBEQ · pith_short_16: W4XAHCEYSBEQYF4J · pith_short_8: W4XAHCEY

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/W4XAHCEYSBEQYF4JTNR2YMZYEP \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: b72e03889890490c17899b63ac333823f5cf54c8022a339395ce24048614b6f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ba30bfaa1290f41386254150411962f111a664cdf4a88c990514dc479c83a15",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2023-02-16T06:49:16Z",
    "title_canon_sha256": "2a47234c00328f28683fbff9b3c7fc1f2b0d9e4a84380f1ccafda881cf8a05b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.08118",
    "kind": "arxiv",
    "version": 3
  }
}