Pith Number

pith:56NPKJ34

pith:2018:56NPKJ34JLYW3ZKBN3IPAYYPPW

not attested not anchored not stored refs pending

De Vries duality for normal spaces and locally compact Hausdorff spaces

Bruce Olberding, Guram Bezhanishvili, Patrick J. Morandi

arxiv:1804.04303 v1 · 2018-04-12 · math.GN

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{56NPKJ34JLYW3ZKBN3IPAYYPPW}

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	2026-05-18T00:18:39.959212Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef9af5277c4af16de5416ed0f0630f7db8a8a24eea1a3f596f2c95b7326de554

Aliases

arxiv: 1804.04303 · arxiv_version: 1804.04303v1 · doi: 10.48550/arxiv.1804.04303 · pith_short_12: 56NPKJ34JLYW · pith_short_16: 56NPKJ34JLYW3ZKB · pith_short_8: 56NPKJ34

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/56NPKJ34JLYW3ZKBN3IPAYYPPW \
  | 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: ef9af5277c4af16de5416ed0f0630f7db8a8a24eea1a3f596f2c95b7326de554

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe82689287c857390423a193eb693c566694f865516001a18766e1b375f029e6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2018-04-12T03:40:45Z",
    "title_canon_sha256": "2c50123de3aa8ddeb6be435a79626e15305981b59b2bb7461fce87c84c064fc1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04303",
    "kind": "arxiv",
    "version": 1
  }
}