Pith Number

pith:D4MLARAS

pith:2018:D4MLARASPRPM6LF3GRPUVJROTJ

not attested not anchored not stored refs pending

The 2-Factor Polynomial Detects Even Perfect Matchings

Adam M. Lowrance, Ben McCarty, Scott Baldridge

arxiv:1812.10346 v2 · 2018-12-26 · 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{D4MLARASPRPM6LF3GRPUVJROTJ}

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	2026-07-05T01:06:46.841361Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f18b044127c5ecf2cbb345f4aa62e9a6d0337a881a18d40c1a6d8da2594e1fe

Aliases

arxiv: 1812.10346 · arxiv_version: 1812.10346v2 · doi: 10.48550/arxiv.1812.10346 · pith_short_12: D4MLARASPRPM · pith_short_16: D4MLARASPRPM6LF3 · pith_short_8: D4MLARAS

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/D4MLARASPRPM6LF3GRPUVJROTJ \
  | 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: 1f18b044127c5ecf2cbb345f4aa62e9a6d0337a881a18d40c1a6d8da2594e1fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1eb2b78eda3a96587bfb59b64f933b6be10a5f5eabe9d727d80bf54c4b7c0810",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-12-26T15:45:05Z",
    "title_canon_sha256": "24b2706115488c2b71ae39bf761e4546ae7e3e56c377a43595e061dd25b6fa9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.10346",
    "kind": "arxiv",
    "version": 2
  }
}