Pith Number

pith:K7ZE3SPF

pith:2012:K7ZE3SPFCCKTDLPZZDGCIDSUXH

not attested not anchored not stored refs pending

The maximum agreement subtree problem

Bhalchandra D. Thatte, Daniel M. Martin

arxiv:1201.5168 v5 · 2012-01-25 · 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{K7ZE3SPFCCKTDLPZZDGCIDSUXH}

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	2026-05-18T03:33:11.915784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57f24dc9e5109531adf9c8cc240e54b9e9fe3d960425b94acd0d5c5424388f38

Aliases

arxiv: 1201.5168 · arxiv_version: 1201.5168v5 · doi: 10.48550/arxiv.1201.5168 · pith_short_12: K7ZE3SPFCCKT · pith_short_16: K7ZE3SPFCCKTDLPZ · pith_short_8: K7ZE3SPF

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/K7ZE3SPFCCKTDLPZZDGCIDSUXH \
  | 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: 57f24dc9e5109531adf9c8cc240e54b9e9fe3d960425b94acd0d5c5424388f38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b286cf0a5712158b8ee2a96119197fef09fa8959499f4f95c79d90b70ae2234",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-01-25T00:59:43Z",
    "title_canon_sha256": "7e5d4491895300b8311344a0e30ae950ae512d593ea83776931f96b923e6747a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.5168",
    "kind": "arxiv",
    "version": 5
  }
}