Pith Number

pith:F2DNPBOR

pith:2017:F2DNPBORQOPVDLR4THYLYLHLVP

not attested not anchored not stored refs pending

Constructive completeness and non-discrete languages

Christian Esp\'indola, Henrik Forssell

arxiv:1709.05817 v1 · 2017-09-18 · math.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{F2DNPBORQOPVDLR4THYLYLHLVP}

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	2026-05-18T00:34:59.288278Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e86d785d1839f51ae3c99f0bc2cebabf113f5898c67d7f363a51849c28356a8

Aliases

arxiv: 1709.05817 · arxiv_version: 1709.05817v1 · doi: 10.48550/arxiv.1709.05817 · pith_short_12: F2DNPBORQOPV · pith_short_16: F2DNPBORQOPVDLR4 · pith_short_8: F2DNPBOR

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/F2DNPBORQOPVDLR4THYLYLHLVP \
  | 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: 2e86d785d1839f51ae3c99f0bc2cebabf113f5898c67d7f363a51849c28356a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b9561824ab2678552256d0e3db45e5f5a7c4985f9f1288d3abc06cc08fb6d91",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2017-09-18T08:40:48Z",
    "title_canon_sha256": "e3747707b2fda96084780fe740ec51e360076c0f898c0dd1931f363296b3a07b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.05817",
    "kind": "arxiv",
    "version": 1
  }
}