Pith Number

pith:UFIP54EM

pith:2009:UFIP54EMALCX6XT5ZPYV6T3YNX

not attested not anchored not stored refs pending

'Schwinger Model' on the Fuzzy Sphere

E. Harikumar

arxiv:0907.3020 v4 · 2009-07-17 · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UFIP54EMALCX6XT5ZPYV6T3YNX}

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	2026-05-18T04:35:05.331037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a150fef08c02c57f5e7dcbf15f4f786debf0c02a922debbd918c075a99ab8ec9

Aliases

arxiv: 0907.3020 · arxiv_version: 0907.3020v4 · doi: 10.48550/arxiv.0907.3020 · pith_short_12: UFIP54EMALCX · pith_short_16: UFIP54EMALCX6XT5 · pith_short_8: UFIP54EM

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/UFIP54EMALCX6XT5ZPYV6T3YNX \
  | 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: a150fef08c02c57f5e7dcbf15f4f786debf0c02a922debbd918c075a99ab8ec9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "469af32f003b4abdac2e03632ab8593bf91aff0cfd51831693dc7baf1fcd6d3b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2009-07-17T08:41:19Z",
    "title_canon_sha256": "de26317b4ab89a3ac786dee9e50de8b221952ac0e64b4ef7732104521e082b6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3020",
    "kind": "arxiv",
    "version": 4
  }
}