Pith Number

pith:ZBI6QWAY

pith:2011:ZBI6QWAYSOQ6UXPATWR77A7VZO

not attested not anchored not stored refs pending

An Algorithm Computing the Core of a Konig-Egervary Graph

Eugen Mandrescu, Vadim E. Levit

arxiv:1102.1141 v1 · 2011-02-06 · 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{ZBI6QWAYSOQ6UXPATWR77A7VZO}

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	2026-05-18T04:29:54.948784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c851e8581893a1ea5de09da3ff83f5cbac7961910776f78295baab9274666b66

Aliases

arxiv: 1102.1141 · arxiv_version: 1102.1141v1 · doi: 10.48550/arxiv.1102.1141 · pith_short_12: ZBI6QWAYSOQ6 · pith_short_16: ZBI6QWAYSOQ6UXPA · pith_short_8: ZBI6QWAY

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/ZBI6QWAYSOQ6UXPATWR77A7VZO \
  | 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: c851e8581893a1ea5de09da3ff83f5cbac7961910776f78295baab9274666b66

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "607da9fc972f9b91e6a0b8c9cf4802ae955e72ad32c84a2d3a116088eeb88225",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2011-02-06T11:21:00Z",
    "title_canon_sha256": "16d9050c224de0df690ea15a3fe5856ef0106210764460d0ebfd577d80fb9e02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.1141",
    "kind": "arxiv",
    "version": 1
  }
}