Pith Number

pith:RLTJIFYY

pith:2014:RLTJIFYYDKLASR2LOAECME3X4W

not attested not anchored not stored refs pending

Cotorsion-free groups from a topological viewpoint

Hanspeter Fischer, Katsuya Eda

arxiv:1409.0567 v1 · 2014-09-01 · math.AT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RLTJIFYYDKLASR2LOAECME3X4W}

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	2026-05-18T00:24:40.178240Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ae69417181a9609474b7008261377e59dd4127f8776f8822c44e386ff211ed5

Aliases

arxiv: 1409.0567 · arxiv_version: 1409.0567v1 · doi: 10.48550/arxiv.1409.0567 · pith_short_12: RLTJIFYYDKLA · pith_short_16: RLTJIFYYDKLASR2L · pith_short_8: RLTJIFYY

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/RLTJIFYYDKLASR2LOAECME3X4W \
  | 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: 8ae69417181a9609474b7008261377e59dd4127f8776f8822c44e386ff211ed5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "930dc42cbea586c4afa7f6569d40c599c2a59522436428b4878b618a30451bf1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2014-09-01T21:04:16Z",
    "title_canon_sha256": "d8450b0c0c164c9b07d45032dc7c70d70005010135443930452683397a7729d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.0567",
    "kind": "arxiv",
    "version": 1
  }
}