Pith Number

pith:6B5OLFXV

pith:2010:6B5OLFXVVNHW5KY3AFP2YMB6TE

not attested not anchored not stored refs pending

The B\"acklund Transform of Principal Contact Element Nets

Hans-Peter Schr\"ocker

arxiv:1010.3339 v1 · 2010-10-16 · math.DG · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6B5OLFXVVNHW5KY3AFP2YMB6TE}

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	2026-05-18T04:39:09.401967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f07ae596f5ab4f6eab1b015fac303e990a62897cccba9d6f24032663089beb1b

Aliases

arxiv: 1010.3339 · arxiv_version: 1010.3339v1 · doi: 10.48550/arxiv.1010.3339 · pith_short_12: 6B5OLFXVVNHW · pith_short_16: 6B5OLFXVVNHW5KY3 · pith_short_8: 6B5OLFXV

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/6B5OLFXVVNHW5KY3AFP2YMB6TE \
  | 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: f07ae596f5ab4f6eab1b015fac303e990a62897cccba9d6f24032663089beb1b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "235c26ab4a0d3addd20aa80c785f3b2253c0c4f53bedd0617bbd33d18c374bf2",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-10-16T11:51:03Z",
    "title_canon_sha256": "56ce2da7ba31ff0436859cc739641f0c8824b6d62caf31c49c64db5705c03ff4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1010.3339",
    "kind": "arxiv",
    "version": 1
  }
}