Pith Number

pith:M4M76EU4

pith:2015:M4M76EU4ECBDGE6KFJDB7GITJI

not attested not anchored not stored refs pending

Sequent Calculus in the Topos of Trees

Rajeev Gor\'e, Ranald Clouston

arxiv:1501.03293 v2 · 2015-01-14 · 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{M4M76EU4ECBDGE6KFJDB7GITJI}

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	2026-05-18T02:18:32.795638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6719ff129c20823313ca2a461f99134a29782d9d50eb7dec1bc60a565f11ff4f

Aliases

arxiv: 1501.03293 · arxiv_version: 1501.03293v2 · doi: 10.48550/arxiv.1501.03293 · pith_short_12: M4M76EU4ECBD · pith_short_16: M4M76EU4ECBDGE6K · pith_short_8: M4M76EU4

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/M4M76EU4ECBDGE6KFJDB7GITJI \
  | 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: 6719ff129c20823313ca2a461f99134a29782d9d50eb7dec1bc60a565f11ff4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef2d266c45cea44230daf04a5d1e8b2c78238be6473b6cd9bb73d5005e1f8d74",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2015-01-14T09:42:22Z",
    "title_canon_sha256": "d83758967dfcf93ec243f939ea2244c76172d3144d8ee40e1136af5629b2e5fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.03293",
    "kind": "arxiv",
    "version": 2
  }
}