Pith Number

pith:RS4JL4RO

pith:2015:RS4JL4ROIYEUV63QN4HUXT7U5P

not attested not anchored not stored refs pending

Local index formula for the quantum double suspension

Bipul Saurabh, Partha Sarathi Chakraborty

arxiv:1509.04978 v2 · 2015-09-16 · math.KT · 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{RS4JL4ROIYEUV63QN4HUXT7U5P}

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	2026-05-18T00:39:07.252087Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8cb895f22e46094afb706f0f4bcff4ebda4656c2f4a530d3e7be319b1ebe2427

Aliases

arxiv: 1509.04978 · arxiv_version: 1509.04978v2 · doi: 10.48550/arxiv.1509.04978 · pith_short_12: RS4JL4ROIYEU · pith_short_16: RS4JL4ROIYEUV63Q · pith_short_8: RS4JL4RO

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/RS4JL4ROIYEUV63QN4HUXT7U5P \
  | 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: 8cb895f22e46094afb706f0f4bcff4ebda4656c2f4a530d3e7be319b1ebe2427

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28a81091ec27bacb405702bd2729ab910a62b8eb6c2570c0470c64f7ab340773",
    "cross_cats_sorted": [
      "math.OA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2015-09-16T17:22:22Z",
    "title_canon_sha256": "41cea3ab046b90a0e71fbe0f4fc8546ae631f7bc18b78e6826b44ceb9f4e423d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.04978",
    "kind": "arxiv",
    "version": 2
  }
}