Pith Number

pith:T7BKOFJD

pith:2015:T7BKOFJD4UIMQMPQF4W6IJGTPE

not attested not anchored not stored refs pending

Fully parameter-free calculation of optical spectra for insulators, semiconductors and metals from a simple polarization functional

J.A. Berger

arxiv:1503.00333 v2 · 2015-03-01 · 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{T7BKOFJD4UIMQMPQF4W6IJGTPE}

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	2026-05-18T01:29:03.018678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fc2a71523e510c831f02f2de424d37902fa51a94defb405586233559f1bbc47

Aliases

arxiv: 1503.00333 · arxiv_version: 1503.00333v2 · doi: 10.48550/arxiv.1503.00333 · pith_short_12: T7BKOFJD4UIM · pith_short_16: T7BKOFJD4UIMQMPQ · pith_short_8: T7BKOFJD

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/T7BKOFJD4UIMQMPQF4W6IJGTPE \
  | 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: 9fc2a71523e510c831f02f2de424d37902fa51a94defb405586233559f1bbc47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0caa8b7c9c2bbd6e8e8f91fb98e6f9322eb6dbf243d04b2984fb9f551d557303",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2015-03-01T19:03:23Z",
    "title_canon_sha256": "2a80e6a94c1f880f900342253895a72ef2740c07bf8176320e48e68af0d219a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.00333",
    "kind": "arxiv",
    "version": 2
  }
}