Pith Number

pith:7Z5FEBQU

pith:2003:7Z5FEBQU3BPYMT3J4SRGRKUYFG

not attested not anchored not stored refs pending

Frequency-independent effective rest mass of photons in the 2TDLM model

Jian-Qi Shen

arxiv:cond-mat/0304039 v1 · 2003-04-02 · cond-mat.mtrl-sci

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7Z5FEBQU3BPYMT3J4SRGRKUYFG}

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	2026-05-18T01:40:01.655778Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe7a520614d85f864f69e4a268aa982993a4e53cc93a404ae50dab3d66086946

Aliases

arxiv: cond-mat/0304039 · arxiv_version: cond-mat/0304039v1 · doi: 10.48550/arxiv.cond-mat/0304039 · pith_short_12: 7Z5FEBQU3BPY · pith_short_16: 7Z5FEBQU3BPYMT3J · pith_short_8: 7Z5FEBQU

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/7Z5FEBQU3BPYMT3J4SRGRKUYFG \
  | 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: fe7a520614d85f864f69e4a268aa982993a4e53cc93a404ae50dab3d66086946

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b7eab43802a72250daa78869934ee7d029ce2d88091030d3bed632a3a27d50f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2003-04-02T08:02:09Z",
    "title_canon_sha256": "69e5981d60fbef5b10db6961752c5fe53e3d87745fbb47080f1d1fafb0bf045d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/0304039",
    "kind": "arxiv",
    "version": 1
  }
}