Pith Number

pith:NZUPYMZZ

pith:2018:NZUPYMZZMYWPSJ2LIPOPFRMR5I

not attested not anchored not stored refs pending

Pointwise intersection in neighbourhood modal logic

Dominik Klein, Frederik Van De Putte

arxiv:1804.10285 v1 · 2018-04-26 · 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{NZUPYMZZMYWPSJ2LIPOPFRMR5I}

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	2026-05-18T00:17:21.266413Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6e68fc3339662cf9274b43dcf2c591ea0b75435ce5e523e6474fe3b79f4e850a

Aliases

arxiv: 1804.10285 · arxiv_version: 1804.10285v1 · doi: 10.48550/arxiv.1804.10285 · pith_short_12: NZUPYMZZMYWP · pith_short_16: NZUPYMZZMYWPSJ2L · pith_short_8: NZUPYMZZ

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/NZUPYMZZMYWPSJ2LIPOPFRMR5I \
  | 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: 6e68fc3339662cf9274b43dcf2c591ea0b75435ce5e523e6474fe3b79f4e850a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3a362dce745b43d6170a0543c957a0ebde3d281f32786efa6a1a559add942bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2018-04-26T21:38:21Z",
    "title_canon_sha256": "5a67ba0519e36eacd0097905be3211f0cad778210b3f0fff140ce9ff3c73e729"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.10285",
    "kind": "arxiv",
    "version": 1
  }
}