Pith Number

pith:6XWEYMZH

pith:2025:6XWEYMZHRLRPZWVNPWA6OWQVGM

not attested not anchored not stored refs pending

Efficient hybrid variational quantum algorithm for solving graph coloring problem

Dongmei Liu, Jian Li, Lili Yan, Shibing Zhang, Xiubo Cheng, Yan Chang

arxiv:2504.21335 v1 · 2025-04-30 · 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{6XWEYMZHRLRPZWVNPWA6OWQVGM}

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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

1 paper in Pith

A Resource-Efficient Quantum Framework for Graph Coloring and Chromatic Number Estimation

Receipt and verification

First computed	2026-07-05T10:56:22.390501Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5ec4c33278ae2fcdaad7d81e75a153328976dca4080fc7a2849d12920f94b3a

Aliases

arxiv: 2504.21335 · arxiv_version: 2504.21335v1 · doi: 10.48550/arxiv.2504.21335 · pith_short_12: 6XWEYMZHRLRP · pith_short_16: 6XWEYMZHRLRPZWVN · pith_short_8: 6XWEYMZH

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/6XWEYMZHRLRPZWVNPWA6OWQVGM \
  | 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: f5ec4c33278ae2fcdaad7d81e75a153328976dca4080fc7a2849d12920f94b3a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dde47467ac46b4eaf56c997e13b6c04deb454004705424a324147898c0b4901a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-04-30T05:45:15Z",
    "title_canon_sha256": "57e191cb0b32a163c7df72965d16dfda576a55440ebc64f9c30e11d8c5701887"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.21335",
    "kind": "arxiv",
    "version": 1
  }
}