Pith Number

pith:PUVWLZJC

pith:2016:PUVWLZJCSY2M2L7Z2SIHJGOEZM

not attested not anchored not stored refs pending

Axiomatics for the external numbers of nonstandard analysis

Bruno Dinis, Imme van den Berg

arxiv:1605.02551 v2 · 2016-05-09 · 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{PUVWLZJCSY2M2L7Z2SIHJGOEZM}

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	2026-05-17T23:42:43.828662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d2b65e5229634cd2ff9d4907499c4cb03e2a30b810a7aabd81bc0389236620c

Aliases

arxiv: 1605.02551 · arxiv_version: 1605.02551v2 · doi: 10.48550/arxiv.1605.02551 · pith_short_12: PUVWLZJCSY2M · pith_short_16: PUVWLZJCSY2M2L7Z · pith_short_8: PUVWLZJC

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/PUVWLZJCSY2M2L7Z2SIHJGOEZM \
  | 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: 7d2b65e5229634cd2ff9d4907499c4cb03e2a30b810a7aabd81bc0389236620c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "02cfaa511c359ec1e5c1a944f9b3eef7bb8fc1edd7d5223e503413cb14e9b3b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2016-05-09T12:13:10Z",
    "title_canon_sha256": "bb5750eab7e3587cea142c5a36a6a66714b278ebc604311c2219d938bfd71f2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.02551",
    "kind": "arxiv",
    "version": 2
  }
}