Pith Number

pith:7WST4JQY

pith:2012:7WST4JQYZ2KB3GFJJLNRTWQ4XE

not attested not anchored not stored refs pending

On the homology of the Harmonic Archipelago

Du\v{s}an Repov\v{s}, Umed H. Karimov

arxiv:1203.4274 v1 · 2012-03-19 · math.GT · math.AT · 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{7WST4JQYZ2KB3GFJJLNRTWQ4XE}

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	2026-05-18T03:59:39.499162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fda53e2618ce941d98a94adb19da1cb92f60bdbeb274d2950605a0adb0614091

Aliases

arxiv: 1203.4274 · arxiv_version: 1203.4274v1 · doi: 10.48550/arxiv.1203.4274 · pith_short_12: 7WST4JQYZ2KB · pith_short_16: 7WST4JQYZ2KB3GFJ · pith_short_8: 7WST4JQY

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/7WST4JQYZ2KB3GFJJLNRTWQ4XE \
  | 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: fda53e2618ce941d98a94adb19da1cb92f60bdbeb274d2950605a0adb0614091

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb845949c56b5ccaac1444c29d480358df902046ca9bb2e947e9511eec30cc69",
    "cross_cats_sorted": [
      "math.AT",
      "math.GN"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2012-03-19T21:42:15Z",
    "title_canon_sha256": "9688e9b58db71dcc38c311f6d00ef9bb17e3d513ca666476d24729a4cfd853ce"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.4274",
    "kind": "arxiv",
    "version": 1
  }
}