Pith Number

pith:BRZ2UXQ5

pith:2017:BRZ2UXQ5HKEHS7AUBDK2FL6Q3D

not attested not anchored not stored refs pending

Modularisation of Sequent Calculi for Normal and Non-normal Modalities

Bj\"orn Lellmann, Elaine Pimentel

arxiv:1702.08193 v2 · 2017-02-27 · cs.LO · 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{BRZ2UXQ5HKEHS7AUBDK2FL6Q3D}

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	2026-05-18T00:30:28.470994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c73aa5e1d3a88797c1408d5a2afd0d8c1244a126477bf104dec973ce5907c21

Aliases

arxiv: 1702.08193 · arxiv_version: 1702.08193v2 · doi: 10.48550/arxiv.1702.08193 · pith_short_12: BRZ2UXQ5HKEH · pith_short_16: BRZ2UXQ5HKEHS7AU · pith_short_8: BRZ2UXQ5

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/BRZ2UXQ5HKEHS7AUBDK2FL6Q3D \
  | 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: 0c73aa5e1d3a88797c1408d5a2afd0d8c1244a126477bf104dec973ce5907c21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed9dbc9da797cc6229de8bd965572fff567a1451d194398d12d1bce480412999",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2017-02-27T08:57:36Z",
    "title_canon_sha256": "3239cbe232b9de55c870d0e9eb6a1eee161f3623dcf15d1cff8179e046589dfc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.08193",
    "kind": "arxiv",
    "version": 2
  }
}