Pith Number

pith:EVEDAVWX

pith:2014:EVEDAVWXDJAI5U6R3VZ2SJKTXC

not attested not anchored not stored refs pending

Evolutes and isoperimetric deficit in two-dimensional spaces of constant curvature

Agust\'i Revent\'os, Juli\`a Cuf\'i

arxiv:1403.3236 v1 · 2014-03-13 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EVEDAVWXDJAI5U6R3VZ2SJKTXC}

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	2026-05-18T02:56:31.511953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25483056d71a408ed3d1dd73a92553b8a47e9a4ea4b18d14ca8b80e44dfe7bcf

Aliases

arxiv: 1403.3236 · arxiv_version: 1403.3236v1 · doi: 10.48550/arxiv.1403.3236 · pith_short_12: EVEDAVWXDJAI · pith_short_16: EVEDAVWXDJAI5U6R · pith_short_8: EVEDAVWX

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/EVEDAVWXDJAI5U6R3VZ2SJKTXC \
  | 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: 25483056d71a408ed3d1dd73a92553b8a47e9a4ea4b18d14ca8b80e44dfe7bcf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f20348621f95fef014e6bffa1d0b7ddfb1d16161cffaf13f548c3b42728c8ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-03-13T11:31:21Z",
    "title_canon_sha256": "3683fff41e0d1da909cf04242ccfc88924196ce13bb0191c1789cec01e91a7e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.3236",
    "kind": "arxiv",
    "version": 1
  }
}