Pith Number

pith:BUYE3T5E

pith:2009:BUYE3T5EDKBLAHWS5NC3DWLWMD

not attested not anchored not stored refs pending

A new semidefinite programming hierarchy for cycles in binary matroids and cuts in graphs

Jo\~ao Gouveia, Monique Laurent, Pablo A. Parrilo, Rekha Thomas

arxiv:0907.4518 v2 · 2009-07-26 · math.OC · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BUYE3T5EDKBLAHWS5NC3DWLWMD}

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	2026-05-18T03:45:23.482403Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d304dcfa41a82b01ed2eb45b1d97660f59ad166bb12e97e54e5d0401348dd11

Aliases

arxiv: 0907.4518 · arxiv_version: 0907.4518v2 · doi: 10.48550/arxiv.0907.4518 · pith_short_12: BUYE3T5EDKBL · pith_short_16: BUYE3T5EDKBLAHWS · pith_short_8: BUYE3T5E

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/BUYE3T5EDKBLAHWS5NC3DWLWMD \
  | 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: 0d304dcfa41a82b01ed2eb45b1d97660f59ad166bb12e97e54e5d0401348dd11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80eeb380af98ede4d50f8f9b512d70b801dd76144aeaa38aa5e23ff53a1da293",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2009-07-26T21:06:16Z",
    "title_canon_sha256": "e9a6cb66bc0950bf905a61d3804d3ec635b1e0995479443642c080977b7a4b00"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.4518",
    "kind": "arxiv",
    "version": 2
  }
}