Pith Number

pith:QEKIZSOV

pith:2009:QEKIZSOVGKK5LAJEO7G5IP6244

not attested not anchored not stored refs pending

Variations on Muchnik's Conditional Complexity Theorem

Alexander Shen, Andrei Romashchenko, Daniil Musatov

arxiv:0904.3116 v4 · 2009-04-20 · 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{QEKIZSOVGKK5LAJEO7G5IP6244}

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	2026-05-18T04:26:33.428819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81148cc9d53295d5812477cdd43fdae733aa90c8f38de93970349e72b961845f

Aliases

arxiv: 0904.3116 · arxiv_version: 0904.3116v4 · doi: 10.48550/arxiv.0904.3116 · pith_short_12: QEKIZSOVGKK5 · pith_short_16: QEKIZSOVGKK5LAJE · pith_short_8: QEKIZSOV

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/QEKIZSOVGKK5LAJEO7G5IP6244 \
  | 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: 81148cc9d53295d5812477cdd43fdae733aa90c8f38de93970349e72b961845f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "14bddba76f3bbe31499efda184c58a94c59e43bb5b46e0f84db2f124c16d0685",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2009-04-20T21:05:09Z",
    "title_canon_sha256": "1193996050acf015d947ba5e7224168a278d0091ac7c7fd700aca63de3eca36a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3116",
    "kind": "arxiv",
    "version": 4
  }
}