Pith Number

pith:TDJG3TPI

pith:2018:TDJG3TPIMHABN3H53FHHB6KZU7

not attested not anchored not stored refs pending

Similarity problems, Folner sets and isometric representations of amenable semigroups

Catalin Badea, Laurian Suciu

arxiv:1804.08960 v2 · 2018-04-24 · math.FA · math.GR · math.OA · math.SP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TDJG3TPIMHABN3H53FHHB6KZU7}

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	2026-05-17T23:52:07.774609Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98d26dcde861c016ecfdd94e70f959a7da7dbe6c2875792c51297323b48601bb

Aliases

arxiv: 1804.08960 · arxiv_version: 1804.08960v2 · doi: 10.48550/arxiv.1804.08960 · pith_short_12: TDJG3TPIMHAB · pith_short_16: TDJG3TPIMHABN3H5 · pith_short_8: TDJG3TPI

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/TDJG3TPIMHABN3H53FHHB6KZU7 \
  | 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: 98d26dcde861c016ecfdd94e70f959a7da7dbe6c2875792c51297323b48601bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3df34ce2bd33e75b7a46db565e8ae16ba7ec504fc12de44479f38e3ca20b66d1",
    "cross_cats_sorted": [
      "math.GR",
      "math.OA",
      "math.SP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2018-04-24T11:32:06Z",
    "title_canon_sha256": "884b6c1d236ff6d0024a9bce70f2b34917d1c37c25eb6999d4ba9f1a4205e28a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08960",
    "kind": "arxiv",
    "version": 2
  }
}