Pith Number

pith:IYX7LQLM

pith:2012:IYX7LQLMJTW2D3YDC3O37BSZJV

not attested not anchored not stored refs pending

Some Open Problems in Topological Algebra

Igor Guran, Igor Protasov, Mitrofan Choban, Taras Banakh

arxiv:1202.1619 v1 · 2012-02-08 · 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{IYX7LQLMJTW2D3YDC3O37BSZJV}

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	2026-05-18T04:02:51.814190Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

462ff5c16c4ceda1ef0316ddbf86594d617b24905fdbf3c6d07a02fc3327122c

Aliases

arxiv: 1202.1619 · arxiv_version: 1202.1619v1 · doi: 10.48550/arxiv.1202.1619 · pith_short_12: IYX7LQLMJTW2 · pith_short_16: IYX7LQLMJTW2D3YD · pith_short_8: IYX7LQLM

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/IYX7LQLMJTW2D3YDC3O37BSZJV \
  | 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: 462ff5c16c4ceda1ef0316ddbf86594d617b24905fdbf3c6d07a02fc3327122c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c120177039bcde1c119ec78cbb67961d84ad8172eec630243402f1ab9f30ae68",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2012-02-08T08:06:31Z",
    "title_canon_sha256": "19a683e9bce26be79e531325d99ae83f8c6e76d25c5a6309a037ea33f6b1e9fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1619",
    "kind": "arxiv",
    "version": 1
  }
}