Pith Number

pith:SFRDOJKQ

pith:2015:SFRDOJKQOC6DBNYXDRRWNYOA2U

not attested not anchored not stored refs pending

Closed Convex Hulls of Unitary Orbits in C$^*$-Algebras of Real Rank Zero

Paul Skoufranis

arxiv:1504.04825 v1 · 2015-04-19 · math.OA · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SFRDOJKQOC6DBNYXDRRWNYOA2U}

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	2026-05-18T01:05:12.850661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

916237255070bc30b7171c6366e1c0d52f2c0eb453cac4112364f169ed47d71b

Aliases

arxiv: 1504.04825 · arxiv_version: 1504.04825v1 · doi: 10.48550/arxiv.1504.04825 · pith_short_12: SFRDOJKQOC6D · pith_short_16: SFRDOJKQOC6DBNYX · pith_short_8: SFRDOJKQ

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/SFRDOJKQOC6DBNYXDRRWNYOA2U \
  | 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: 916237255070bc30b7171c6366e1c0d52f2c0eb453cac4112364f169ed47d71b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d36d9735c7b4c972cd8bf5fecefd3416474f28bb042493e03cbd363c04ba0461",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OA",
    "submitted_at": "2015-04-19T12:38:47Z",
    "title_canon_sha256": "4ec04c10a2b32d180134685151b0ec6de0fa916fbb1e49e21e4f128515ab4baa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.04825",
    "kind": "arxiv",
    "version": 1
  }
}