Pith Number

pith:BPYKP2Z3

pith:2015:BPYKP2Z3J34PDSU7J75FIMNYAK

not attested not anchored not stored refs pending

Entanglement entropy in the Hamming networks

F. Eghbalifam, M. A. Jafarizadeh, S. Nami

arxiv:1503.04986 v1 · 2015-03-17 · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BPYKP2Z3J34PDSU7J75FIMNYAK}

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	2026-05-18T02:22:20.869407Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0bf0a7eb3b4ef8f1ca9f4ffa5431b802bc02431b1d9028853be705e159724e69

Aliases

arxiv: 1503.04986 · arxiv_version: 1503.04986v1 · doi: 10.48550/arxiv.1503.04986 · pith_short_12: BPYKP2Z3J34P · pith_short_16: BPYKP2Z3J34PDSU7 · pith_short_8: BPYKP2Z3

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/BPYKP2Z3J34PDSU7J75FIMNYAK \
  | 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: 0bf0a7eb3b4ef8f1ca9f4ffa5431b802bc02431b1d9028853be705e159724e69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e8c3b35c5619fa2e01451d58eb54c8d3181eeeb59715daf64e79a90532d0c77",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2015-03-17T10:45:28Z",
    "title_canon_sha256": "78fdb356bf043a31b3e2bb37fab67124daffabea1a7761337c509585a6e0beb0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.04986",
    "kind": "arxiv",
    "version": 1
  }
}