Pith. sign in
Pith Number

pith:ZSBS5KDK

pith:1998:ZSBS5KDKBI4GL2FZ7NWEW3H4QN
not attested not anchored not stored refs pending

On positivity of parton distributions

Giovanni Ridolfi, Guido Altarelli, Stefano Forte

arxiv:hep-ph/9806345 v2 · 1998-06-11 · hep-ph

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{ZSBS5KDKBI4GL2FZ7NWEW3H4QN}

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.

Cited by

2 papers in Pith

Receipt and verification
First computed 2026-07-05T07:23:44.516502Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

cc832ea86a0a3865e8b9fb6c4b6cfc8347ec33dbcc799ec884ed3cbedd44a037

Aliases

arxiv: hep-ph/9806345 · arxiv_version: hep-ph/9806345v2 · doi: 10.48550/arxiv.hep-ph/9806345 · pith_short_12: ZSBS5KDKBI4G · pith_short_16: ZSBS5KDKBI4GL2FZ · pith_short_8: ZSBS5KDK
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZSBS5KDKBI4GL2FZ7NWEW3H4QN \
  | 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: cc832ea86a0a3865e8b9fb6c4b6cfc8347ec33dbcc799ec884ed3cbedd44a037
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "3493d469cc2c45ea1a02e956971b1dc3ef27106b81221848ecc265ac1160ce13",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-ph",
    "submitted_at": "1998-06-11T14:36:46Z",
    "title_canon_sha256": "59438b0824cad7bc33bf4917b98ccfabd4e43a28dee88f73d5703d00f4a5d756"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-ph/9806345",
    "kind": "arxiv",
    "version": 2
  }
}