Pith Number

pith:MWF5HOY4

pith:2019:MWF5HOY4DJ6VCJH2FVZQCB7IOO

not attested not anchored not stored refs pending

The r-Hunter-Saxton equation, smooth and singular solutions and their approximation

Colin Cotter, Jacob Deasy, Tristan Pryer

arxiv:1911.09619 v2 · 2019-11-21 · math.AP · nlin.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MWF5HOY4DJ6VCJH2FVZQCB7IOO}

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	2026-07-05T01:55:44.163269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

658bd3bb1c1a7d5124fa2d730107e873ac9a0616ffc9a84a48bb3e0c32c9e06e

Aliases

arxiv: 1911.09619 · arxiv_version: 1911.09619v2 · doi: 10.48550/arxiv.1911.09619 · pith_short_12: MWF5HOY4DJ6V · pith_short_16: MWF5HOY4DJ6VCJH2 · pith_short_8: MWF5HOY4

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/MWF5HOY4DJ6VCJH2FVZQCB7IOO \
  | 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: 658bd3bb1c1a7d5124fa2d730107e873ac9a0616ffc9a84a48bb3e0c32c9e06e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e247835bfa39ab7fde186e9e5b832e426000f1f853aabef1446c7f58b9c85ce0",
    "cross_cats_sorted": [
      "nlin.SI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-11-21T17:28:19Z",
    "title_canon_sha256": "5f691422854b0b16e208e7b3f30e0149578e31ac1f74bc9af4bd0eeb684d4c55"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1911.09619",
    "kind": "arxiv",
    "version": 2
  }
}