Pith Number

pith:KCNF2RA4

pith:2009:KCNF2RA4ZPUG6ZYKW353SGUO7D

not attested not anchored not stored refs pending

E-Theory for C*-algebras over topological spaces

Marius Dadarlat, Ralf Meyer

arxiv:0912.0283 v1 · 2009-12-01 · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KCNF2RA4ZPUG6ZYKW353SGUO7D}

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	2026-05-18T01:29:32.330611Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

509a5d441ccbe86f670ab6fbb91a8ef8f41e45d01ee02f41ada68efff3f27b85

Aliases

arxiv: 0912.0283 · arxiv_version: 0912.0283v1 · doi: 10.48550/arxiv.0912.0283 · pith_short_12: KCNF2RA4ZPUG · pith_short_16: KCNF2RA4ZPUG6ZYK · pith_short_8: KCNF2RA4

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/KCNF2RA4ZPUG6ZYKW353SGUO7D \
  | 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: 509a5d441ccbe86f670ab6fbb91a8ef8f41e45d01ee02f41ada68efff3f27b85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e852972eb5cf1dc3f9d98cadb7bbfe7663e25eb71005d7bed94594328a631688",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2009-12-01T22:02:07Z",
    "title_canon_sha256": "b6df0b4b9c30bf6abe73993d793f4d789c884bac6b9a7610eb21196866e200e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.0283",
    "kind": "arxiv",
    "version": 1
  }
}