Pith Number

pith:E4ODW4O2

pith:2016:E4ODW4O2MEOECFV4XWDMJSFB7K

not attested not anchored not stored refs pending

Splitting $B_2$-VPG graphs into outer-string and co-comparability graphs

Martin Derka, Therese Biedl

arxiv:1612.07276 v1 · 2016-12-21 · cs.CG · 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{E4ODW4O2MEOECFV4XWDMJSFB7K}

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	2026-05-18T00:54:14.342876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

271c3b71da611c4116bcbd86c4c8a1faa4cf91e8a329fab7c90528009b7196bb

Aliases

arxiv: 1612.07276 · arxiv_version: 1612.07276v1 · doi: 10.48550/arxiv.1612.07276 · pith_short_12: E4ODW4O2MEOE · pith_short_16: E4ODW4O2MEOECFV4 · pith_short_8: E4ODW4O2

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/E4ODW4O2MEOECFV4XWDMJSFB7K \
  | 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: 271c3b71da611c4116bcbd86c4c8a1faa4cf91e8a329fab7c90528009b7196bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b586d617b54e242bf4271559a4420c7ac9626cccdc66ce6012cea9b9036199db",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2016-12-21T18:58:17Z",
    "title_canon_sha256": "ef29260ed1efb03636d8410a9ad6a8fdac47a834ff0a64dcd631eba609044b40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.07276",
    "kind": "arxiv",
    "version": 1
  }
}