Pith Number

pith:EEWX7G5P

pith:2014:EEWX7G5PTFRXV5CGODRWF3NXHQ

not attested not anchored not stored refs pending

A Sequent Calculus for Dynamic Topological Logic

Samuel Reid

arxiv:1407.7803 v2 · 2014-07-25 · math.LO · 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{EEWX7G5PTFRXV5CGODRWF3NXHQ}

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	2026-05-18T02:45:57.498870Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

212d7f9baf99637af44670e362edb73c0587defb2cfdd30b1c73419523b23fe1

Aliases

arxiv: 1407.7803 · arxiv_version: 1407.7803v2 · doi: 10.48550/arxiv.1407.7803 · pith_short_12: EEWX7G5PTFRX · pith_short_16: EEWX7G5PTFRXV5CG · pith_short_8: EEWX7G5P

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/EEWX7G5PTFRXV5CGODRWF3NXHQ \
  | 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: 212d7f9baf99637af44670e362edb73c0587defb2cfdd30b1c73419523b23fe1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc2375c5d693023215dae1e4aabb56e41754b7b22fda0bd6e838e6ddc7490764",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2014-07-25T20:44:02Z",
    "title_canon_sha256": "66ae55f9d25790dbc50d1be9be6bbab4e730842840f5c29574a5df5426223ff7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.7803",
    "kind": "arxiv",
    "version": 2
  }
}