Pith Number

pith:Z4ZEPNSI

pith:2018:Z4ZEPNSICPWXWSF5PALBDXZ4FX

not attested not anchored not stored refs pending

Computational Complexity of Space-Bounded Real Numbers

Marcos Villagra, Masaki Nakanishi

arxiv:1805.02572 v1 · 2018-05-07 · 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{Z4ZEPNSICPWXWSF5PALBDXZ4FX}

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	2026-05-18T00:16:39.620839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf3247b64813ed7b48bd781611df3c2dfee882d8eba6365be41220842cff9f9c

Aliases

arxiv: 1805.02572 · arxiv_version: 1805.02572v1 · doi: 10.48550/arxiv.1805.02572 · pith_short_12: Z4ZEPNSICPWX · pith_short_16: Z4ZEPNSICPWXWSF5 · pith_short_8: Z4ZEPNSI

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/Z4ZEPNSICPWXWSF5PALBDXZ4FX \
  | 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: cf3247b64813ed7b48bd781611df3c2dfee882d8eba6365be41220842cff9f9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0edc76cb002c67284dc37451ed924b9b36e20a8e27033df300ef7e4528cf82de",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2018-05-07T15:28:31Z",
    "title_canon_sha256": "5a375dfff92602c6b9af951456b7546b4e399c0defa8bf520e9c2c3ad713a672"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.02572",
    "kind": "arxiv",
    "version": 1
  }
}