Pith Number

pith:A3MG3BLM

pith:2019:A3MG3BLMST4ZSCJPSH2CUL2NIB

not attested not anchored not stored refs pending

Proving the NP-completeness of optimal moral graph triangulation

Kevin Korb, Lloyd Allison, Yang Li

arxiv:1903.02201 v1 · 2019-03-06 · cs.CC · cs.DM · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A3MG3BLMST4ZSCJPSH2CUL2NIB}

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	2026-05-17T23:51:56.491973Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

06d86d856c94f999092f91f42a2f4d404d3324106774d96ac96008664a96e06a

Aliases

arxiv: 1903.02201 · arxiv_version: 1903.02201v1 · doi: 10.48550/arxiv.1903.02201 · pith_short_12: A3MG3BLMST4Z · pith_short_16: A3MG3BLMST4ZSCJP · pith_short_8: A3MG3BLM

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/A3MG3BLMST4ZSCJPSH2CUL2NIB \
  | 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: 06d86d856c94f999092f91f42a2f4d404d3324106774d96ac96008664a96e06a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "29b543582ce396d7823469d0f84c4a094ceb2d02518dff2cd9fd9d1752e9e604",
    "cross_cats_sorted": [
      "cs.DM",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2019-03-06T06:52:21Z",
    "title_canon_sha256": "cb367fc7e2f1eab54777366fd37ca634dcdde99d7665da6639f136158bb88406"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.02201",
    "kind": "arxiv",
    "version": 1
  }
}