Pith Number

pith:PQTRVEGI

pith:2013:PQTRVEGIZROGULACQPUZ7D62OO

not attested not anchored not stored refs pending

An algebraic approach to weak and delay bismulation in coalgebra

Tomasz Brengos

arxiv:1302.4856 v2 · 2013-02-20 · 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{PQTRVEGIZROGULACQPUZ7D62OO}

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	2026-05-18T03:14:08.507288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c271a90c8cc5c6a2c0283e99f8fda7397e8c8d304937fcca91d4a409476a8d1

Aliases

arxiv: 1302.4856 · arxiv_version: 1302.4856v2 · doi: 10.48550/arxiv.1302.4856 · pith_short_12: PQTRVEGIZROG · pith_short_16: PQTRVEGIZROGULAC · pith_short_8: PQTRVEGI

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/PQTRVEGIZROGULACQPUZ7D62OO \
  | 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: 7c271a90c8cc5c6a2c0283e99f8fda7397e8c8d304937fcca91d4a409476a8d1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ee5991d7f05eefb7516a6a9e3c0aa5e912446cde455442768077e4e7dc1b3ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-02-20T10:02:14Z",
    "title_canon_sha256": "b6ee1e02ba3f3ae44b576e3e16bc273447cd084508061cee52a4acba9a05d1e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.4856",
    "kind": "arxiv",
    "version": 2
  }
}