Pith Number

pith:LF3ZBISQ

pith:2011:LF3ZBISQN7YX6TSTNC7N4DMKMX

not attested not anchored not stored refs pending

Some Measurements of Nullable and Non-Nullable Parameter Declarations in Relation to Software Malleability

Paul Biggar, Tim Walsh, William Harrison

arxiv:1108.4816 v1 · 2011-08-24 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LF3ZBISQN7YX6TSTNC7N4DMKMX}

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	2026-05-18T04:14:46.731864Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

597790a2506ff17f4e5368bede0d8a65f022e5df7ba8a01d195691407b4aa2b8

Aliases

arxiv: 1108.4816 · arxiv_version: 1108.4816v1 · doi: 10.48550/arxiv.1108.4816 · pith_short_12: LF3ZBISQN7YX · pith_short_16: LF3ZBISQN7YX6TST · pith_short_8: LF3ZBISQ

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/LF3ZBISQN7YX6TSTNC7N4DMKMX \
  | 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: 597790a2506ff17f4e5368bede0d8a65f022e5df7ba8a01d195691407b4aa2b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dfdcba93e5a89910308508d70b4ca3964fc60aba49c930e16eb6c0de9199b7d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2011-08-24T11:41:00Z",
    "title_canon_sha256": "22aeb9bea889d2a4920987658d20608eb121a6ae724658792b029ce3f30393dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.4816",
    "kind": "arxiv",
    "version": 1
  }
}