Pith Number

pith:EXGDIJHQ

pith:2017:EXGDIJHQ6LVJLZVMK3YHJZWHXD

not attested not anchored not stored refs pending

The three-dimensional standard solution to the Ricci flow is modeled by the Bryant soliton

Yongjia Zhang

arxiv:1705.01248 v2 · 2017-05-03 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXGDIJHQ6LVJLZVMK3YHJZWHXD}

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	2026-05-18T00:44:51.032239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25cc3424f0f2ea95e6ac56f074e6c7b8f05aafb8e96dd8d3c7e188991ee4cd0b

Aliases

arxiv: 1705.01248 · arxiv_version: 1705.01248v2 · doi: 10.48550/arxiv.1705.01248 · pith_short_12: EXGDIJHQ6LVJ · pith_short_16: EXGDIJHQ6LVJLZVM · pith_short_8: EXGDIJHQ

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/EXGDIJHQ6LVJLZVMK3YHJZWHXD \
  | 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: 25cc3424f0f2ea95e6ac56f074e6c7b8f05aafb8e96dd8d3c7e188991ee4cd0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9c747886505ed9c601643eb12606eb20133530af968def3851b646f07319d9a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-05-03T04:01:30Z",
    "title_canon_sha256": "f756a512b35049c5fdfdaff1042ebbfa1e7131b262c22c8dc28eeb1298f6fc97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.01248",
    "kind": "arxiv",
    "version": 2
  }
}