Pith Number

pith:2E7BCJMR

pith:2012:2E7BCJMREYOEZND6N5I5MDN67B

not attested not anchored not stored refs pending

Hereditarily Normal Wijsman Hyperspaces Are Metrizable

Heikki J. K. Junnila, Jiling Cao

arxiv:1211.0043 v1 · 2012-10-31 · 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{2E7BCJMREYOEZND6N5I5MDN67B}

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	2026-05-18T03:41:43.296343Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d13e112591261c4cb47e6f51d60dbef853653eda94bf5e27b3e733e8dd4debb9

Aliases

arxiv: 1211.0043 · arxiv_version: 1211.0043v1 · doi: 10.48550/arxiv.1211.0043 · pith_short_12: 2E7BCJMREYOE · pith_short_16: 2E7BCJMREYOEZND6 · pith_short_8: 2E7BCJMR

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/2E7BCJMREYOEZND6N5I5MDN67B \
  | 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: d13e112591261c4cb47e6f51d60dbef853653eda94bf5e27b3e733e8dd4debb9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83c5840376803b30df64ba66b2cb7d0722c5e43937e9f571efa9394b0ec4cd04",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2012-10-31T21:49:48Z",
    "title_canon_sha256": "cd3f69a7686a963d864348f60000d7e01881322009bdf35b574254ada96ba613"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.0043",
    "kind": "arxiv",
    "version": 1
  }
}