Pith Number

pith:AXBZFFT5

pith:2019:AXBZFFT563E4D6IYCTUJTVMJM5

not attested not anchored not stored refs pending

Lewisian Fixed Points I: Two Incomparable Constructions

Albert Visser, Tadeusz Litak

arxiv:1905.09450 v1 · 2019-05-23 · 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{AXBZFFT563E4D6IYCTUJTVMJM5}

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	2026-05-17T23:45:17.003905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05c392967df6c9c1f91814e899d589674124023f70326245cbba7aefbdf516d9

Aliases

arxiv: 1905.09450 · arxiv_version: 1905.09450v1 · doi: 10.48550/arxiv.1905.09450 · pith_short_12: AXBZFFT563E4 · pith_short_16: AXBZFFT563E4D6IY · pith_short_8: AXBZFFT5

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/AXBZFFT563E4D6IYCTUJTVMJM5 \
  | 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: 05c392967df6c9c1f91814e899d589674124023f70326245cbba7aefbdf516d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33231a9949d9b0f7d7e92cfaf6b6d28469d27c6f8d7468db0075d44671205828",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-05-23T03:29:54Z",
    "title_canon_sha256": "0bfbc80691bf0112dcf0b7cca8981acefd22edd05272c2b0915bd5234130e779"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09450",
    "kind": "arxiv",
    "version": 1
  }
}