Pith Number

pith:57C4YU4C

pith:2011:57C4YU4C5JJYGWKL72AD23OWR5

not attested not anchored not stored refs pending

Nematic braids: topological invariants and rewiring of disclinations

Simon \v{C}opar, Slobodan \v{Z}umer

arxiv:1104.2130 v1 · 2011-04-12 · cond-mat.soft

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{57C4YU4C5JJYGWKL72AD23OWR5}

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	2026-05-18T04:22:41.017073Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efc5cc5382ea5383594bfe803d6dd68f449e65d036dfbc19b3db7bda4d849ae2

Aliases

arxiv: 1104.2130 · arxiv_version: 1104.2130v1 · doi: 10.48550/arxiv.1104.2130 · pith_short_12: 57C4YU4C5JJY · pith_short_16: 57C4YU4C5JJYGWKL · pith_short_8: 57C4YU4C

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/57C4YU4C5JJYGWKL72AD23OWR5 \
  | 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: efc5cc5382ea5383594bfe803d6dd68f449e65d036dfbc19b3db7bda4d849ae2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f632041c5a85b201775e32400e8d57b47e31ee3ad479d7550c53d5e6121f77c5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2011-04-12T08:01:41Z",
    "title_canon_sha256": "0e871d0e0682e410bd0b7800469d8efb93272f8b0da919ee5f39e6b122b124fa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.2130",
    "kind": "arxiv",
    "version": 1
  }
}