Pith Number

pith:2ITKTPBM

pith:1999:2ITKTPBM53ZFKR7HLKV7TVGN7E

not attested not anchored not stored refs pending

Spontaneous vs. piezoelectric polarization in III-V nitrides: conceptual aspects and practical consequences

Fabio Bernardini, Vincenzo Fiorentini (Cagliari)

arxiv:cond-mat/9908087 v1 · 1999-08-06 · 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{2ITKTPBM53ZFKR7HLKV7TVGN7E}

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	2026-05-18T01:39:28.519522Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d226a9bc2ceef25547e75aabf9d4cdf92ed378e5189274a1f55f067c95b0aea8

Aliases

arxiv: cond-mat/9908087 · arxiv_version: cond-mat/9908087v1 · doi: 10.48550/arxiv.cond-mat/9908087 · pith_short_12: 2ITKTPBM53ZF · pith_short_16: 2ITKTPBM53ZFKR7H · pith_short_8: 2ITKTPBM

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/2ITKTPBM53ZFKR7HLKV7TVGN7E \
  | 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: d226a9bc2ceef25547e75aabf9d4cdf92ed378e5189274a1f55f067c95b0aea8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f873043c2bb0378a3e8ce54c5faeaeda8ba43dd550206675154afe2e5f9eb967",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "1999-08-06T08:19:47Z",
    "title_canon_sha256": "63bc7c805effb9199a34f5dfc014680779083851d94a7de8f96d3686bba7b880"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cond-mat/9908087",
    "kind": "arxiv",
    "version": 1
  }
}