Pith Number

pith:I6NQ754K

pith:2014:I6NQ754KT3B7XN6NK7IRRKBZIL

not attested not anchored not stored refs pending

A Multilevel Bilinear Programming Algorithm For the Vertex Separator Problem

Ilya Safro, James T. Hungerford, William W. Hager

arxiv:1410.4885 v2 · 2014-10-17 · cs.DS · cs.DM · 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{I6NQ754KT3B7XN6NK7IRRKBZIL}

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	2026-05-18T01:11:00.376399Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

479b0ff78a9ec3fbb7cd57d118a83942fbf973d88e150ede7f0b60577187869d

Aliases

arxiv: 1410.4885 · arxiv_version: 1410.4885v2 · doi: 10.48550/arxiv.1410.4885 · pith_short_12: I6NQ754KT3B7 · pith_short_16: I6NQ754KT3B7XN6N · pith_short_8: I6NQ754K

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/I6NQ754KT3B7XN6NK7IRRKBZIL \
  | 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: 479b0ff78a9ec3fbb7cd57d118a83942fbf973d88e150ede7f0b60577187869d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1cef9195424e79abd60fec395e1fec185b844aa307bcc50de4893d4c9ec949bb",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-10-17T23:07:50Z",
    "title_canon_sha256": "ae5ca38b629230744576407aa1eb3a2d95111619f84bf307c6a4055743936a94"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1410.4885",
    "kind": "arxiv",
    "version": 2
  }
}