Pith Number

pith:W7HA5TXE

pith:2016:W7HA5TXEBTITY3O56KX2LRI6QH

not attested not anchored not stored refs pending

On Planar Valued CSPs

Peter Fulla, Stanislav Zivny

arxiv:1602.06323 v3 · 2016-02-19 · cs.CC · 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{W7HA5TXEBTITY3O56KX2LRI6QH}

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	2026-05-18T00:46:42.829015Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7ce0ecee40cd13c6dddf2afa5c51e81ed8852a7fd47d121617ab5734e4ac979

Aliases

arxiv: 1602.06323 · arxiv_version: 1602.06323v3 · doi: 10.48550/arxiv.1602.06323 · pith_short_12: W7HA5TXEBTIT · pith_short_16: W7HA5TXEBTITY3O5 · pith_short_8: W7HA5TXE

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/W7HA5TXEBTITY3O56KX2LRI6QH \
  | 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: b7ce0ecee40cd13c6dddf2afa5c51e81ed8852a7fd47d121617ab5734e4ac979

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3039d0022931467718ba8458ed5e7b3eb89306221a25876fdc02357b7ee79b1",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2016-02-19T21:42:39Z",
    "title_canon_sha256": "df27dfe34d0820d35057a7e9d68298adc0184092083ec8ac46dd0dfe34b48f93"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.06323",
    "kind": "arxiv",
    "version": 3
  }
}