Pith Number

pith:VL3BQDB7

pith:2013:VL3BQDB764FZFXIJ2OCT4OC7T2

not attested not anchored not stored refs pending

Nematics, Knots and Non-orientable Surfaces

Gareth P. Alexander, Thomas Machon

arxiv:1305.0143 v1 · 2013-05-01 · 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{VL3BQDB764FZFXIJ2OCT4OC7T2}

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	2026-05-18T02:57:43.634715Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aaf6180c3ff70b92dd09d3853e385f9eacbfe52d484ab31911a5a4e324fd72fb

Aliases

arxiv: 1305.0143 · arxiv_version: 1305.0143v1 · doi: 10.48550/arxiv.1305.0143 · pith_short_12: VL3BQDB764FZ · pith_short_16: VL3BQDB764FZFXIJ · pith_short_8: VL3BQDB7

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/VL3BQDB764FZFXIJ2OCT4OC7T2 \
  | 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: aaf6180c3ff70b92dd09d3853e385f9eacbfe52d484ab31911a5a4e324fd72fb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c8a360cb71cb2e419f8c8260df96f5222c32466c57be33d785488170f47a635",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.soft",
    "submitted_at": "2013-05-01T11:12:07Z",
    "title_canon_sha256": "8802eb8519a1f357b472a5e6e8914218d58b7394ad9f8dd3627fc4edc570b701"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0143",
    "kind": "arxiv",
    "version": 1
  }
}