Pith Number

pith:PPMTP7BT

pith:2014:PPMTP7BTY34Q5OUH6WIFBUUDHP

not attested not anchored not stored refs pending

Auxetic two-dimensional lattice with Poisson's Ratio arbitrarily close to -1

L. Cabras, M. Brun

arxiv:1407.5679 v1 · 2014-07-21 · physics.class-ph · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPMTP7BTY34Q5OUH6WIFBUUDHP}

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	2026-05-18T01:42:33.324371Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bd937fc33c6f90eba87f59050d2833bd3612ff6e2bbf11c05758d6515babf27

Aliases

arxiv: 1407.5679 · arxiv_version: 1407.5679v1 · doi: 10.48550/arxiv.1407.5679 · pith_short_12: PPMTP7BTY34Q · pith_short_16: PPMTP7BTY34Q5OUH · pith_short_8: PPMTP7BT

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/PPMTP7BTY34Q5OUH6WIFBUUDHP \
  | 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: 7bd937fc33c6f90eba87f59050d2833bd3612ff6e2bbf11c05758d6515babf27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4b0ac518e272bd60530931960414d5132c6f39cefbda243e8e4d6387aeb822c",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.class-ph",
    "submitted_at": "2014-07-21T22:29:20Z",
    "title_canon_sha256": "ca5fe00b4e8cb9c50be20ad1c33e429d299fdfffb1a60b54a254b485f9a2f2f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.5679",
    "kind": "arxiv",
    "version": 1
  }
}