Pith Number

pith:ED4XI7FF

pith:2017:ED4XI7FFCCJ6UAACJLYTKPEOXL

not attested not anchored not stored refs pending

Results on the homotopy type of the spaces of locally convex curves on $S^3$

Em\'ilia Alves, Nicolau C. Saldanha

arxiv:1703.02581 v2 · 2017-03-07 · 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{ED4XI7FFCCJ6UAACJLYTKPEOXL}

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	2026-05-18T00:24:31.453656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20f9747ca51093ea00024af1353c8ebac6acc74e81f5f9966cd4094ef9e44e88

Aliases

arxiv: 1703.02581 · arxiv_version: 1703.02581v2 · doi: 10.48550/arxiv.1703.02581 · pith_short_12: ED4XI7FFCCJ6 · pith_short_16: ED4XI7FFCCJ6UAAC · pith_short_8: ED4XI7FF

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/ED4XI7FFCCJ6UAACJLYTKPEOXL \
  | 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: 20f9747ca51093ea00024af1353c8ebac6acc74e81f5f9966cd4094ef9e44e88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e574219ad28ece0aa663fd87fcf590caa18d6a4d32680c2a0eb7dd591589309d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2017-03-07T20:26:23Z",
    "title_canon_sha256": "c14bbfd175ec1f3aa33bd6581bb8a4f2490d29f2f7a3879d2c09567db559e866"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.02581",
    "kind": "arxiv",
    "version": 2
  }
}