Pith Number

pith:DIYL6UNM

pith:2016:DIYL6UNMWGNPUX7YK2NZ44XGPI

not attested not anchored not stored refs pending

On the complexity of the permanent in various computational models

Christian Ikenmeyer, J.M. Landsberg

arxiv:1610.00159 v1 · 2016-10-01 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DIYL6UNMWGNPUX7YK2NZ44XGPI}

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	2026-05-18T01:03:31.752455Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a30bf51acb19afa5ff8569b9e72e67a37cc5f643c896885922d1e9ccec916dd

Aliases

arxiv: 1610.00159 · arxiv_version: 1610.00159v1 · doi: 10.48550/arxiv.1610.00159 · pith_short_12: DIYL6UNMWGNP · pith_short_16: DIYL6UNMWGNPUX7Y · pith_short_8: DIYL6UNM

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/DIYL6UNMWGNPUX7YK2NZ44XGPI \
  | 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: 1a30bf51acb19afa5ff8569b9e72e67a37cc5f643c896885922d1e9ccec916dd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "332697adb6ac2c7af4d554621ddd8b42ab0211a8c5320f9ccd4b96bf170d4fe3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2016-10-01T17:04:36Z",
    "title_canon_sha256": "2f7567860008fb252c10c3ddf2cf564eb14c71c1063bff48e0ab664672536efb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.00159",
    "kind": "arxiv",
    "version": 1
  }
}