Pith Number

pith:5YUHEAVG

pith:2011:5YUHEAVGK23V2WULXWQLCAQWW3

not attested not anchored not stored refs pending

Low-level dichotomy for Quantified Constraint Satisfaction Problems

Barnaby Martin

arxiv:1102.3463 v1 · 2011-02-17 · cs.CC · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5YUHEAVGK23V2WULXWQLCAQWW3}

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	2026-05-18T04:28:28.975689Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee287202a656b75d5a8bbda0b10216b6d1382b2dac75ecd695858a78bdb035e9

Aliases

arxiv: 1102.3463 · arxiv_version: 1102.3463v1 · doi: 10.48550/arxiv.1102.3463 · pith_short_12: 5YUHEAVGK23V · pith_short_16: 5YUHEAVGK23V2WUL · pith_short_8: 5YUHEAVG

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/5YUHEAVGK23V2WULXWQLCAQWW3 \
  | 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: ee287202a656b75d5a8bbda0b10216b6d1382b2dac75ecd695858a78bdb035e9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "805b2a0878dde8085ab4bbce9f671406899810e43e4bd6553d4fd133e55a22cf",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2011-02-17T01:00:31Z",
    "title_canon_sha256": "35604be3532f7d2b3c0c422565396955f3068ada9926220b40c40c7e3a4c09ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.3463",
    "kind": "arxiv",
    "version": 1
  }
}