Pith Number

pith:SXPYKDEP

pith:2017:SXPYKDEPMO775QOWYVOWQ5V3DK

not attested not anchored not stored refs pending

Surface groups of diffeomorphisms of the interval

Juan Souto, Ludovic Marquis

arxiv:1701.09019 v3 · 2017-01-31 · math.GT · math.DS · math.GR · 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{SXPYKDEPMO775QOWYVOWQ5V3DK}

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	2026-05-18T00:35:16.449386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95df850c8f63bffec1d6c55d6876bb1ab040722bce748cd2b695cb1e089ea493

Aliases

arxiv: 1701.09019 · arxiv_version: 1701.09019v3 · doi: 10.48550/arxiv.1701.09019 · pith_short_12: SXPYKDEPMO77 · pith_short_16: SXPYKDEPMO775QOW · pith_short_8: SXPYKDEP

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/SXPYKDEPMO775QOWYVOWQ5V3DK \
  | 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: 95df850c8f63bffec1d6c55d6876bb1ab040722bce748cd2b695cb1e089ea493

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f596317a858099852679271c30a8fbbcd01491cb19bc17d0775ac3b01c9c0b9b",
    "cross_cats_sorted": [
      "math.DS",
      "math.GR",
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2017-01-31T12:56:13Z",
    "title_canon_sha256": "c3ced2a19fd3a2a6aa65d92eba5ebf3e260ab5d7f882a3c2aaf41e78d4d26258"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.09019",
    "kind": "arxiv",
    "version": 3
  }
}