Pith Number

pith:YJK7H7QO

pith:2019:YJK7H7QOIHWE25HI57572MCH5M

not attested not anchored not stored refs pending

Core-compactness of Smyth powerspaces

Xiaodong Jia, Zhenchao Lyu

arxiv:1907.04715 v1 · 2019-07-10 · 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{YJK7H7QOIHWE25HI57572MCH5M}

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	2026-05-17T23:40:57.019823Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c255f3fe0e41ec4d74e8effbfd3047eb270e027791dc3f78628bf8118e953004

Aliases

arxiv: 1907.04715 · arxiv_version: 1907.04715v1 · doi: 10.48550/arxiv.1907.04715 · pith_short_12: YJK7H7QOIHWE · pith_short_16: YJK7H7QOIHWE25HI · pith_short_8: YJK7H7QO

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/YJK7H7QOIHWE25HI57572MCH5M \
  | 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: c255f3fe0e41ec4d74e8effbfd3047eb270e027791dc3f78628bf8118e953004

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1bb41efd48b79dfe5fae9ab24709bb82f69d4597b8da4b5088b5c704f4dfe653",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2019-07-10T13:36:31Z",
    "title_canon_sha256": "510dccf708d65b759648f1c012ac27c38fb65f93c2948948f9123814e451fa9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.04715",
    "kind": "arxiv",
    "version": 1
  }
}