Pith Number

pith:X663KRFG

pith:2018:X663KRFGZWJT67MEBCCPXBWNBF

not attested not anchored not stored refs pending

De Vries duality for compactifications and completely regular spaces

Bruce Olberding, Guram Bezhanishvili, Patrick J. Morandi

arxiv:1804.03210 v1 · 2018-04-09 · 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{X663KRFGZWJT67MEBCCPXBWNBF}

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	2026-05-18T00:18:56.690716Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfbdb544a6cd933f7d840884fb86cd09641e0964eb5771b80e91d307c42fa500

Aliases

arxiv: 1804.03210 · arxiv_version: 1804.03210v1 · doi: 10.48550/arxiv.1804.03210 · pith_short_12: X663KRFGZWJT · pith_short_16: X663KRFGZWJT67ME · pith_short_8: X663KRFG

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/X663KRFGZWJT67MEBCCPXBWNBF \
  | 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: bfbdb544a6cd933f7d840884fb86cd09641e0964eb5771b80e91d307c42fa500

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57beddd9cd5ce4aa30380be64f45a9cb87203bc46d16e9034d1b93a3e7670c86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2018-04-09T19:59:06Z",
    "title_canon_sha256": "5829ffe2b0cfe8a7b9784989a73c4fec770c9a47f4f2e7bd0a4c55dce47276d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03210",
    "kind": "arxiv",
    "version": 1
  }
}