Pith Number

pith:YDJOXHBV

pith:2012:YDJOXHBVYA4JYQMFFFQEWBHJ3Z

not attested not anchored not stored refs pending

Extension properties of Stone-\v{C}ech coronas and proper absolute extensors

A. Chigogidze

arxiv:1208.2829 v2 · 2012-08-14 · 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{YDJOXHBVYA4JYQMFFFQEWBHJ3Z}

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	2026-05-18T03:28:05.848462Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0d2eb9c35c0389c418529604b04e9de50d59f8cc7da0813bd72949e0dae980f

Aliases

arxiv: 1208.2829 · arxiv_version: 1208.2829v2 · doi: 10.48550/arxiv.1208.2829 · pith_short_12: YDJOXHBVYA4J · pith_short_16: YDJOXHBVYA4JYQMF · pith_short_8: YDJOXHBV

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/YDJOXHBVYA4JYQMFFFQEWBHJ3Z \
  | 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: c0d2eb9c35c0389c418529604b04e9de50d59f8cc7da0813bd72949e0dae980f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ca4f792439fc6b87f33f79076f694a19350b0d4743b704dde1f8d520b22d855",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2012-08-14T11:16:30Z",
    "title_canon_sha256": "fedb294198f2d1dd5e9e88767f997f5bccc5c0d339a10dc8f44d8cd04162a302"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.2829",
    "kind": "arxiv",
    "version": 2
  }
}