Pith Number

pith:QV6KOTTQ

pith:2009:QV6KOTTQH5FYKAWSTBKGY7SBUJ

not attested not anchored not stored refs pending

Bounded and unbounded Fredholm modules for quantum projective spaces

Francesco D'Andrea, Giovanni Landi

arxiv:0903.3553 v2 · 2009-03-20 · math.QA · 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{QV6KOTTQH5FYKAWSTBKGY7SBUJ}

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	2026-05-18T04:02:01.172389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

857ca74e703f4b8502d298546c7e41a26733d6ca91962a2e5014095abc1d7437

Aliases

arxiv: 0903.3553 · arxiv_version: 0903.3553v2 · doi: 10.48550/arxiv.0903.3553 · pith_short_12: QV6KOTTQH5FY · pith_short_16: QV6KOTTQH5FYKAWS · pith_short_8: QV6KOTTQ

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/QV6KOTTQH5FYKAWSTBKGY7SBUJ \
  | 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: 857ca74e703f4b8502d298546c7e41a26733d6ca91962a2e5014095abc1d7437

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "53f40aac488d6f66e6159a33788483c0b6112085d3eb9a57ed9634d690af87bf",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.QA",
    "submitted_at": "2009-03-20T15:55:39Z",
    "title_canon_sha256": "2e10a2ae71ccbed22acae5fc949e0b9331b4010d430f3d2ad0a180ca5dfcfdb1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.3553",
    "kind": "arxiv",
    "version": 2
  }
}