Pith Number

pith:6UQS3EL3

pith:2015:6UQS3EL3AYK7ZGWCWF3JQVLAKJ

not attested not anchored not stored refs pending

On Equivalences, Metrics, and Polynomial Time (Long Version)

Alberto Cappai, Ugo Dal Lago

arxiv:1506.03710 v1 · 2015-06-11 · 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{6UQS3EL3AYK7ZGWCWF3JQVLAKJ}

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	2026-05-18T01:53:03.486529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5212d917b0615fc9ac2b176985560527a372816afbe510a65609c22dbed8cc0

Aliases

arxiv: 1506.03710 · arxiv_version: 1506.03710v1 · doi: 10.48550/arxiv.1506.03710 · pith_short_12: 6UQS3EL3AYK7 · pith_short_16: 6UQS3EL3AYK7ZGWC · pith_short_8: 6UQS3EL3

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/6UQS3EL3AYK7ZGWCWF3JQVLAKJ \
  | 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: f5212d917b0615fc9ac2b176985560527a372816afbe510a65609c22dbed8cc0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16f53cc3b6b5e518040cb47fc88c32576ce7551936c9ad53519484f644ed16db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-06-11T15:32:04Z",
    "title_canon_sha256": "eeadedc8d57c16cc8f23dee5c01b1f2d836f4b0640f337ccfa49a7c7a9bc1fde"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.03710",
    "kind": "arxiv",
    "version": 1
  }
}