Pith Number

pith:27ITWGGQ

pith:2014:27ITWGGQAABZCHSAPD3754LGRR

not attested not anchored not stored refs pending

A discretised projection theorem in the plane

Tuomas Orponen

arxiv:1407.6543 v2 · 2014-07-24 · math.CA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{27ITWGGQAABZCHSAPD3754LGRR}

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	2026-05-18T02:45:31.009708Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7d13b18d00003911e4078f7fef1668c582175ad5179ebe5aba7c7b1c73acedf

Aliases

arxiv: 1407.6543 · arxiv_version: 1407.6543v2 · doi: 10.48550/arxiv.1407.6543 · pith_short_12: 27ITWGGQAABZ · pith_short_16: 27ITWGGQAABZCHSA · pith_short_8: 27ITWGGQ

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/27ITWGGQAABZCHSAPD3754LGRR \
  | 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: d7d13b18d00003911e4078f7fef1668c582175ad5179ebe5aba7c7b1c73acedf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "134f470edc6a189c0ef02fb00cc9c9a4e73c3fbd534fa08d43428efeb9d36c51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CA",
    "submitted_at": "2014-07-24T12:16:43Z",
    "title_canon_sha256": "5a3506414b39458af0a06d7b006a95051292a5e7fd9cfdbb9612606f69af6ae1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.6543",
    "kind": "arxiv",
    "version": 2
  }
}