Pith Number

pith:QAM7G6KW

pith:2016:QAM7G6KWUOIL2NHEO66TP4VTPF

not attested not anchored not stored refs pending

The geometry of second-order ordinary differential equations

Boris Doubrov, Boris Komrakov

arxiv:1602.00913 v1 · 2016-02-02 · math.DG · 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{QAM7G6KWUOIL2NHEO66TP4VTPF}

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	2026-05-18T01:21:24.319899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8019f37956a390bd34e477bd37f2b3794f448e36346d9209a1737f1190cc6033

Aliases

arxiv: 1602.00913 · arxiv_version: 1602.00913v1 · doi: 10.48550/arxiv.1602.00913 · pith_short_12: QAM7G6KWUOIL · pith_short_16: QAM7G6KWUOIL2NHE · pith_short_8: QAM7G6KW

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/QAM7G6KWUOIL2NHEO66TP4VTPF \
  | 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: 8019f37956a390bd34e477bd37f2b3794f448e36346d9209a1737f1190cc6033

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67c4214366e1eb1fc4aeec97a2341c4f5577603b23fd128935d33019c2eb7af7",
    "cross_cats_sorted": [
      "math.CA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2016-02-02T13:10:15Z",
    "title_canon_sha256": "6fde2bd23e8014362ee82badadb858a752b204f293993d1345016abb4ba0cdc4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.00913",
    "kind": "arxiv",
    "version": 1
  }
}