Pith Number

pith:PHU6AFL4

pith:2014:PHU6AFL4KVUJN6YPHINE6SXWPD

not attested not anchored not stored refs pending

Optimum matchings in weighted bipartite graphs

Carlos E. Valencia, Marcos C. Vargas

arxiv:1403.5606 v1 · 2014-03-22 · math.CO · cs.DM · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PHU6AFL4KVUJN6YPHINE6SXWPD}

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	2026-05-18T02:55:37.788325Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

79e9e0157c556896fb0f3a1a4f4af678fdaa0dfb95828975c6fc324f28266b39

Aliases

arxiv: 1403.5606 · arxiv_version: 1403.5606v1 · doi: 10.48550/arxiv.1403.5606 · pith_short_12: PHU6AFL4KVUJ · pith_short_16: PHU6AFL4KVUJN6YP · pith_short_8: PHU6AFL4

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/PHU6AFL4KVUJN6YPHINE6SXWPD \
  | 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: 79e9e0157c556896fb0f3a1a4f4af678fdaa0dfb95828975c6fc324f28266b39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "240e510e549e2d4010ab6b2c8724fef305c87d9684520c63813c8c15c7d1e9bc",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2014-03-22T03:16:26Z",
    "title_canon_sha256": "41732171c5b3e5f19ad89ecec0391b51c70894ca3fe346bda9f7190da3c7f592"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.5606",
    "kind": "arxiv",
    "version": 1
  }
}