Pith Number

pith:P56DANDG

pith:2011:P56DANDGJWTCJKVPVY6FKZ2GKM

not attested not anchored not stored refs pending

QCSP on partially reflexive forests

Barnaby Martin

arxiv:1103.6212 v1 · 2011-03-31 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P56DANDGJWTCJKVPVY6FKZ2GKM}

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	2026-05-18T04:25:13.680885Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f7c3034664da624aaafae3c556746532acb3a01430c16f3a92dc36e0c2efaff

Aliases

arxiv: 1103.6212 · arxiv_version: 1103.6212v1 · doi: 10.48550/arxiv.1103.6212 · pith_short_12: P56DANDGJWTC · pith_short_16: P56DANDGJWTCJKVP · pith_short_8: P56DANDG

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/P56DANDGJWTCJKVPVY6FKZ2GKM \
  | 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: 7f7c3034664da624aaafae3c556746532acb3a01430c16f3a92dc36e0c2efaff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "206a7667a179c809d97d3075d92a68c0f5a8077996f95e5fe25179cda5d38ad7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-03-31T15:33:37Z",
    "title_canon_sha256": "2a13ac20c8cbdeab6004571f8dba7d0d162a4f99eef22a84a0b263a7da1fb2f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.6212",
    "kind": "arxiv",
    "version": 1
  }
}