Pith Number

pith:M6SFLYLW

pith:1994:M6SFLYLWOHULQKCSYAOM4ILBKB

not attested not anchored not stored refs pending

Epimorphisms of C*-algebras are surjective

Karl H. Hofmann, Karl-H.Neeb

arxiv:funct-an/9405003 v1 · 1994-05-16 · funct-an · 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{M6SFLYLWOHULQKCSYAOM4ILBKB}

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	2026-07-04T15:08:47.719947Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67a455e17671e8b82852c01cce216150471d835d1a4c40ad4b9c4dea18a2c2a7

Aliases

arxiv: funct-an/9405003 · arxiv_version: funct-an/9405003v1 · doi: 10.48550/arxiv.funct-an/9405003 · pith_short_12: M6SFLYLWOHUL · pith_short_16: M6SFLYLWOHULQKCS · pith_short_8: M6SFLYLW

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/M6SFLYLWOHULQKCSYAOM4ILBKB \
  | 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: 67a455e17671e8b82852c01cce216150471d835d1a4c40ad4b9c4dea18a2c2a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dc204906cf8b48e49ca8a18d3ccbbe3409e1bf2929856b4359e5a7d1a3ee013f",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "",
    "primary_cat": "funct-an",
    "submitted_at": "1994-05-16T05:42:31Z",
    "title_canon_sha256": "a026aea33d8907ff879f6d67434709d985837e720ebd927dbded347985b56a08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "funct-an/9405003",
    "kind": "arxiv",
    "version": 1
  }
}