Pith Number

pith:KW4A5DSH

pith:2018:KW4A5DSH4ZSQCJRBOQ6PRNEPZY

not attested not anchored not stored refs pending

Topological systems as a framework for institutions

Austin Melton, Jeffrey T. Denniston, Sergey A. Solovyov, Stephen E. Rodabaugh

arxiv:1809.05885 v1 · 2018-09-16 · math.CT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KW4A5DSH4ZSQCJRBOQ6PRNEPZY}

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	2026-05-18T00:05:36.194939Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55b80e8e47e665012621743cf8b48fce2ae81f6cdcd672c08d51a92f23ae2c3a

Aliases

arxiv: 1809.05885 · arxiv_version: 1809.05885v1 · doi: 10.48550/arxiv.1809.05885 · pith_short_12: KW4A5DSH4ZSQ · pith_short_16: KW4A5DSH4ZSQCJRB · pith_short_8: KW4A5DSH

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/KW4A5DSH4ZSQCJRBOQ6PRNEPZY \
  | 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: 55b80e8e47e665012621743cf8b48fce2ae81f6cdcd672c08d51a92f23ae2c3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78fbcaa1ba2fa49da6d7e46e9a8a522d0367fd381569686e39ec53e1942ea342",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2018-09-16T14:35:07Z",
    "title_canon_sha256": "d83efb04d91eb4ed4d6c4842621c93bb089f3be264764f78e795b20692e274f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05885",
    "kind": "arxiv",
    "version": 1
  }
}