Pith Number

pith:EPWTXIIP

pith:2016:EPWTXIIPC53ZR46V4XE6V5UVPP

not attested not anchored not stored refs pending

Recognizing IC-Planar and NIC-Planar Graphs

Franz J. Brandenburg

arxiv:1610.08884 v1 · 2016-10-27 · 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{EPWTXIIPC53ZR46V4XE6V5UVPP}

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	2026-05-18T01:01:06.999549Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23ed3ba10f177798f3d5e5c9eaf6957be46e92bcf990bc2cd3a7dfc9db682742

Aliases

arxiv: 1610.08884 · arxiv_version: 1610.08884v1 · doi: 10.48550/arxiv.1610.08884 · pith_short_12: EPWTXIIPC53Z · pith_short_16: EPWTXIIPC53ZR46V · pith_short_8: EPWTXIIP

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/EPWTXIIPC53ZR46V4XE6V5UVPP \
  | 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: 23ed3ba10f177798f3d5e5c9eaf6957be46e92bcf990bc2cd3a7dfc9db682742

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9896fe1ef4af007e298c8b985d9315df254dc09fb2364975899c5c9b3d4cddca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2016-10-27T17:01:18Z",
    "title_canon_sha256": "6307031cf8b820dc2e99ed1bbbc2add088ab261c9a684e67baa4c2552db856e9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.08884",
    "kind": "arxiv",
    "version": 1
  }
}