Pith Number

pith:3RFMKYMC

pith:2012:3RFMKYMC4A5AAAVUBMRCFZF5YV

not attested not anchored not stored refs pending

On Two Graph-Theoretic Characterizations of Tree Compatibility

David Fern\'andez-Baca, Sudheer Vakati

arxiv:1210.3762 v1 · 2012-10-14 · cs.DM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3RFMKYMC4A5AAAVUBMRCFZF5YV}

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	2026-05-18T03:43:17.162489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc4ac56182e03a0002b40b2222e4bdc557f3d76cdccf9c5fd01b940854dd8b65

Aliases

arxiv: 1210.3762 · arxiv_version: 1210.3762v1 · doi: 10.48550/arxiv.1210.3762 · pith_short_12: 3RFMKYMC4A5A · pith_short_16: 3RFMKYMC4A5AAAVU · pith_short_8: 3RFMKYMC

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/3RFMKYMC4A5AAAVUBMRCFZF5YV \
  | 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: dc4ac56182e03a0002b40b2222e4bdc557f3d76cdccf9c5fd01b940854dd8b65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c595886bdd817518932e628e5af8b4777c3b299665e47f4d2e3fa4ef7521445",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2012-10-14T05:29:02Z",
    "title_canon_sha256": "987f0d0931ac58465700d05563b2997b9d47058c730136b7b0a637f64358e21c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.3762",
    "kind": "arxiv",
    "version": 1
  }
}