Pith Number

pith:F2FKJYWG

pith:2018:F2FKJYWG6AYXK7CHTTK6JU367M

not attested not anchored not stored refs pending

Deformations of smooth function on $2$-torus whose KR-graph is a tree

Bohdan Feshchenko

arxiv:1804.08966 v1 · 2018-04-24 · math.AT · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{F2FKJYWG6AYXK7CHTTK6JU367M}

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	2026-05-18T00:17:36.765706Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e8aa4e2c6f031757c479cd5e4d37efb20ffa3027373168ef82d3f3441d7111b

Aliases

arxiv: 1804.08966 · arxiv_version: 1804.08966v1 · doi: 10.48550/arxiv.1804.08966 · pith_short_12: F2FKJYWG6AYX · pith_short_16: F2FKJYWG6AYXK7CH · pith_short_8: F2FKJYWG

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/F2FKJYWG6AYXK7CHTTK6JU367M \
  | 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: 2e8aa4e2c6f031757c479cd5e4d37efb20ffa3027373168ef82d3f3441d7111b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25a77e5a353dfd975d873ae23f38489f6510fd72a3bd3648f0534cf96a0c88c0",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2018-04-24T11:46:51Z",
    "title_canon_sha256": "acd4ea9a9903abf29100f9946c6e977194b85bb2cd3d647617a0888ca4443174"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.08966",
    "kind": "arxiv",
    "version": 1
  }
}