Pith Number

pith:RH2CWAQS

pith:2003:RH2CWAQSWGRWZOWOWWWRJHRIJ5

not attested not anchored not stored refs pending

Restricted algebras on inverse semigroups II, positive definite functions

Alireza Medghalchi, Massoud Amini

arxiv:math/0308257 v1 · 2003-08-27 · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RH2CWAQSWGRWZOWOWWWRJHRIJ5}

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	2026-05-18T01:05:28.690444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

89f42b0212b1a36cbaceb5ad149e284f44f3c2e9b44b5afc7ccf8443e91d3bf2

Aliases

arxiv: math/0308257 · arxiv_version: math/0308257v1 · doi: 10.48550/arxiv.math/0308257 · pith_short_12: RH2CWAQSWGRW · pith_short_16: RH2CWAQSWGRWZOWO · pith_short_8: RH2CWAQS

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/RH2CWAQSWGRWZOWOWWWRJHRIJ5 \
  | 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: 89f42b0212b1a36cbaceb5ad149e284f44f3c2e9b44b5afc7ccf8443e91d3bf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec422c36ca099b9f759bf530d1db24bd144d20f5b6ba2b97678b0f9a6f33ce93",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.OA",
    "submitted_at": "2003-08-27T12:26:36Z",
    "title_canon_sha256": "2e0c9b938e036d92b71d59a8e3047df61202e52cf31728ea7f167856d0de3593"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0308257",
    "kind": "arxiv",
    "version": 1
  }
}